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Move as close as possible to the WAP to ensure that the available signal is maximised
Applies To:
- Windows CE for Handheld PC's
Contents:
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This article describes the concepts behind Hard Resetting a Handheld PC.
- FAQ
- How-to Guide
FAQ:
What is a Hard Reset?
Windows CE provides three levels of cycle state. The first is a Standby. In which the device enters a low-power state preserving all data.
The second level is a Soft Reset. This is effectively Windows CE being Rebooted. All Storage Memory remains intact while System Memory is wiped forcing the Operating System to reload all of its required drivers and settings (Including reloading the registry).
The final level is the Hard Reset. A Hard Reset is the Handheld PC equivalent to a Format. All application, user and system memory is wiped.
The second level is a Soft Reset. This is effectively Windows CE being Rebooted. All Storage Memory remains intact while System Memory is wiped forcing the Operating System to reload all of its required drivers and settings (Including reloading the registry).
The final level is the Hard Reset. A Hard Reset is the Handheld PC equivalent to a Format. All application, user and system memory is wiped.
The result of performing a Hard Reset is not as total as formatting a main stream PC. Windows CE devices are low footprint ROM based devices. A Hard Reset cannot clear the information from the ROM chip and so the Operating System and files that make up the inbuilt applications, (such as Pocket Office, Internet Explorer and Solitaire) are completely safe.
When Hard Resetting you do not have to worry about your device not turning back on. With most Handheld PC devices the only way to damage the ROM chip is to physically break it. With some newer devices - such as the NEC MobilePro 900 - the ROM chip is writeable.
If your Handheld PC has a writeable (Flashable) ROM chip. The process of Hard Resetting your Handheld PC and Flashing the ROM chip are totally separate. There are safe guards in place on the device that make it impossible for a you to lose the contents of the ROM chip while performing a Hard Reset process.
If your Handheld PC has a writeable (Flashable) ROM chip. The process of Hard Resetting your Handheld PC and Flashing the ROM chip are totally separate. There are safe guards in place on the device that make it impossible for a you to lose the contents of the ROM chip while performing a Hard Reset process.
Why would I need to perform a Hard Reset?
There are many reason why you would need to. The most common one is for trouble shooting serious system problems. As a Hard Reset restores the Handheld PC to its original shipping state the problem should be rectified by this action.
Other reasons include:
- Device Slow down's - Like all computers, over time the system becomes cluttered and can suffer from a slowdown
- Virus Infections - If your handheld is infected by a virus and you are unable to clean it manually a Hard Reset will remove it
- Boot Failure - If your Handheld PC cannot complete a Soft Reset process, or locks-up while attempting to startup. Hard Resetting will restore the system back to a working state.
Should I regularly Hard Reset my device?
The answer to this question is entirely down to personal preference and how much information you have to restore to the device. Some users Hard Reset their device on a regular basis with aim to keeping the Handheld clutter & problem free. Others have never reset their Handheld PC and it remains problem free.
Restoring information may just be a process of synchronising the Handheld PC with its Host System, it may involve reinstalling lots of programs or for some users it may even involve changes to the registry and core system, settings. All of which can be very time consuming.
If you think you would benefit from schedule Hard Resets you should decide on the most effective way of restoring all your information and programs. HPC:Factor recommends performing the action every 8 - 12 months.
Can I accidentally Hard Reset my Handheld PC?
Yes. A Handheld PC can inadvertently be Hard Reset by excessive environmental conditions and by power state problems.
Operating your Device beyond the environmental guide lines of the manufacturer then you risk triggering a Hard Reset or a complete system Failure.
The most coming cause of accidental hard reset is forgetting to replace the Backup Coin Cell and allowing the main cells to discharge. If either or both of these conditions occur then you run a strong risk of losing your information.
Finally a Hard Reset can be caused by a Power Surge either from the main battery cell or from the AC adapter.
Should I restore from Backup after a Hard Reset?
Ideally no. You may reintroduce a problem that was created before the backup was made. However this is the fastest way of restoring your system. If you Hard Reset to resolve a specific problem and you know that your backup was created before the problem arose. Then restoring from Backup is probably the best method.
How long does a Hard Reset Take?
This depends on your device and the circumstances under which the hard reset took place. Generally speaking the process of clearing the RAM chips takes between 2 and 10 minutes.
How-to Guide:
The process of performing a Hard Reset vary between different manufacturers and different devices.
The following steps are generally universal steps you should take when Hard Resetting:
- If possible Record all your current device settings.
- If possible Perform a Backup of your device so you have a record of all your data should you forget to transfer a file.
- If possible synchronise your device with your Host system so that you don't lose any PIM data
- Ready all the programs that you need to reinstall onto the Handheld
- Remove all attached hardware devices (e.g. PCMCIA cards, CF cards and Sync leads)
- Remove your device from the Cradle and power it off
- Disconnect your Handheld PC from the AC adapter first*
- Remove the Coin Cell Backup Coin Cell second*
- Finally remove the Main Battery's*
- Leave the device in this state for 20 minutes** * - Note 1 - You should perform this action in this order to preserve the system and battery integrity
** - Note 2 - You should allow 20 minutes to ensure that there is no Memory Fragmentation and that the reset process is complete
Powering your device back up:
- Insert the Backup Coin Cell and allow 30 seconds - 1 minute for the RAM to charge
- Insert the Main Battery's
- Power On your device
- Attach the AC adapter
- Go through the OOBE wizard to configure the basic device settings
- Install your software programs and hardware
- Lastly synchronise your device back with the Host
Published: October 17, 2003 | Article last Reviewed: July 9, 2019
CESD-H-0051Applies To:
- Windows CE 2.0, SP1 + NSP
- Windows CE 2.10, 2.11
- Windows CE 3.0
- Windows CE .net 4,0, 4.1, 4.2
- Windows CE 5.0
- Windows CE 6.0
Overview:
This article provides information and steps towards troubleshooting wireless connectivity between Windows CE devices as a Wireless Access Point (WAP).
More Info:
One of the most common and recurring questions that we come across is for advice and support on troubleshooting wireless network connectivity. Invariably the advice that we give comes from a standard, well worn hymn sheet. This guide represents all of the steps that you should go through in troubleshooting your problem for yourself before asking for help from the community.
Step 1: Backup your device
Use ActiveSync backup, use a CE utility or use a CF card, but backup your device. It is fairly common to find that you will inadvertently hard reset older devices by frequent insertion/ejection of CF/PC Card equipment, especially if on battery. You may also get to a point where you will have to hard reset the device as part of testing and so having a backup will allow you to continue without taking any chances.
Step 2: Updates
Ensure that you have all of the latest updated for your Windows CE device. Use HPC:Factor's H/PC:Update service to check for and download any necessary driver updates, operating system updates and ROM images for your device.
If you are running Windows CE 2.0 ensure that you are running SP1 and the HPC:Factor NSP before proceeding.
If you are running a Windows CE 2.1x device, make sure that you have installed any PCMCIA driver updates before proceeding.
View:H/PC:Update
Step 3: Cardbus
If you are using a Cardbus device having read the article outlined below you can stop troubleshooting.
View:[CESDH0037] Understanding PC Card, PCMCIA, Cardbus, 16-bit, 32-bit
Step 4: Interface & Interface Type
In almost all cases you will either be using a PC Card or CF Card Wireless NIC. In very rare cases you can try to get a USB dongle working, however we strongly advise you to stick with a PC Card / CF Card as success is extremely unlikely with USB.
If you are using a CF Card, make sure that you are using the card in the CF Slot. Some cards have been known to refuse to work if used in the PC Card slot by way of an adapter but will work when placed into the CF Slot.
If using CF or PC Card, get a torch and look down the CF slot / PC Card slot. See if there are any bent pins or completely imploded pins at the end of the slot. You will see a number of receded pins in a symmetrical fashion. These are fine as the recessed pins provide the power to the card - the idea is that the data and control connections are made before the device is powered, thus ensuring a clean startup. They are usually around half of the height of the data pins.
Step 5: Know your enemy
Make sure that you know the make and model of the card that you are trying to get to work. If possible try and find out the firmware version in use on the card. This information can be obtained by dipping creatively between from device manager in Windows, the sticker on the back of the card and the FCC ID on the back of the card.
If you don't know what the card is, there is no point continuing and no point asking the community for help.
Also find and document the following information:
- The SSID of the access point to which you are trying to connect
- The 802.11# standards that are supported and running on the WAP (i.e. 802.11a, 802.11b, 802.11g, 802.11n, 802.11a/b/g, b/g, 802.11b/g/n or 802.11a/b/g/n)
- The encryption standard that is running on the WAP (e.g. Open, WEP 40, WEP 64, WEP 104, WEP 128, WEP 256, WPA TKIP, WPA PSK, WPA2 AES etc)
- The alternative encryption standards that are available to configure on the WAP (see list above)
You will need to ask the your system administrator or access the web configuration interface of the WAP. Alternatively for some industrial devices you will have to use Telnet or SSH to access a CLI to find this information. If at a minimum you don't know what the WAP is running with then you cannot proceed.
Make sure that if you control the WAP, you know how to get into the Web Interface/CLI. Look in the manual, search the Internet or simply try typing in the IP address of the WAP into the address bar of a browser on a machine that does have Internet access on your LAN.
View:FCC ID Search
Step 6: Wireless Protected Access / Wireless Protected Access 2 (WPA/WPA2)
If your WAP is using either WPA or WPA2 read the article below. Also be aware that passphrases in WEP are case sensitive and should be matched exactly between the H/PC and WAP.
View:[CESDH0029] Wireless Protected Access (WPA) / WPA2 and the Handheld PC
Step 7: Wireless Protected Access (WEP)
A recurring problem encountered by users of the WEP protocol is in non-standard hash generation of the WEP Hexadecimal Key. Many routers and H/PC encryption user interfaces will ask you to input a 'pass phrase' which will be used to populate the WEP key. It is important that you understand that your pass phrase is NOT the WEP Key. The pass phrase is run through a mathematical hashing algorithm which in turn generates the actual WEP Key. If the algorithm used on the WAP and the H/PC is different, even slightly, it can generate a completely different WEP Key from the pass phrase
Therefore, if you are using WEP always use the WEP Key itself and NOT the pass phrase on the Windows CE device.
In addition, be aware that passphrase generators are case sensitive and that all keys should be entered identically between the WAP and H/PC.
WEP keys are text strings consisting exclusively of 0-9 and A-F. No other characters are permitted as the string is actually a hexadecimal (base 16) number.
- WEP 40 and WEP 64 Keys are 10 digits long
- WEP 104 and 128 are 26 digits long
- WEP 256 Keys are 58 digits long
You MUST configure your WAP and Handheld PC to use the same WEP key standard. If the WAP uses WEP 128 then the H/PC card and driver must also support this. Find the first common match between the WEP key encryption length on both devices and try it.
As a rule of thumb WEP 40 is infrequently supported by H/PC devices, WEP 64 is almost universally supported and WEP 128 is supported most of the time. WEP 104 and WEP 256 are not known to be supported by any legacy driver and so should not be used.
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Step 8: Is the card known to be compatible with Windows CE?
Use the HPC:Factor Hardware Compatibility List to try and find your card. This will tell you if we know the card to be compatible or incompatible with Windows CE and your Windows CE version. If the device is not on the HCL, investigate whether there are formal drivers released by the Original Equipment Manufacturer (OEM) for any Windows CE edition. If there are and we don't have it listed in the HCL please let us know. If you can't find anything on the card, keep reading.
If the card is known to be compatible with Windows CE, there may be a driver for it linked from the HCL. Follow the links and download the driver.
Why do some HCL listings have a download called 'inflated'? Inflated files are zip files containing device friendly .cab installation files. Inflated files mean that HPC:Factor has decompressed a host installed for you and posted the drivers onto the HCL in a way that users without ActiveSync or Windows XP (or lower) can access.
In many cases a card will come with a driver download which has been marked as working on Windows CE but in fact is really a Pocket PC driver; it has always been a problem even with OEM's not knowing the difference. These cases are often seen with Chinese brand adapters, but large western OEM's have been just as guilty in the past. Worse than this, the CAB installer on the H/PC may not notify you that the software is incompatible with Windows CE core devices, making the situation even more confusing.
If you find that when loading the application that you receive a unknown application error or a resource error, this is often (but not exclusively) a sign that the driver will not run on the H/PC.
If you find a piece of hardware with an incorrectly labeled driver, please let us know so that we can update the HCL and where possible contact the OEM! Maxis match skin details.
View:Hardware Compatibility List (HCL)
Step 9: Find out the chipset being used
In order to find out of there is even a possibility to get the card working with Windows CE you will need to find out the chipset. Please do not post on the forums asking for us to tell you what the chipset is. All we will do is go to Google with whatever information you can provide and search. You are just as capable of doing that as we are.
A good tip is to try and find a Linux hardware compatibility list, these often contain WiFi chipset information for different pieces of 802.11# hardware.
The most common chipset's are Intersil Prism 2.5, Prism 3.0, Agere and Cisco Aironet.
Step 10: If you know the chipset
If you cannot find an official driver for the card under Windows CE, but you do know the name of the chipset, you can try what is known as a Chipset Reference Driver. These reference drivers were released as samples by the chipset creator to be modified by OEMs to support customisation's to the card and driver user interfaces. HPC:Factor provides downloads for a number of known reference drivers. If you can match the chipset and version number to one of the downloads below there is still hope.
If you are unable to find the chipset information, it may still be worth trying the Prism 2.5, 3.0 and Agere reference drivers for you Windows CE version - you may get lucky. If you have any success please let us know! Please note however that in order to properly test each of them you should hard reset the device between versions as the uninstall process can leave the registry in an inconsistent state.
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Drivers and some firmware for Cisco Aironet cards can be found in the HCL.
Start with the recommended reference driver and work up the version numbers. Do not start with the highest version number.
View:Prism Reference Drivers | Agere Reference Drivers
Step 11: Update the firmware
![Windows ce 6 0 wm8650 reset tool Windows ce 6 0 wm8650 reset tool](https://i.ytimg.com/vi/4prr5j3LJy0/maxresdefault.jpg)
This is step can be complicated, however where it works it can be significant for the following reasons
It may change the hardware ID information on the card to be one that is recognised by a Windows CE driver
It may fix interface bugs that are known to cause incompatibility between the reference driver and the bespoke firmware/driver originally on the card
Note: If you are using a Cisco Aironet card it is stressed heavily in the Aironet documentation that you should match the firmware and driver version being used. As a rule of thumb always update any Aironet card to the latest firmware and use the latest driver irrespective of whether you H/PC already has an older driver in ROM.
Unfortunately it can be very difficult to get hold of firmware for PC Card devices. Do try however; Compaq and Cisco cards are both good examples of where firmware is often available.
Step 12: MiniStumbler
MiniStumbler will not work with all wireless hardware. This isn't a fault of Windows CE, but the reality that ministumbler has to be hard coded to support different chipset and so it is impractical to expect it to work with everything.
MiniStumbler is a SSID scanning utility. It can show you all available SSID's in range of the device including the channel number. This is useful as not all Windows CE drivers have a form of SSID scanner built-in. If compatible it will be able to tell you if the driver can talk to the hardware and is detecting SSID's - in which case you are almost certainly experiencing a software configuration problem and not a hardware of device driver issue.
Ministumbler is a sub-project of the NetStumbler project and is freeware.
View:NetStumbler
Step 13: Location, location, location
Some WAP configuration utilities and drivers allow you to set details surrounding the country you are current located in. This is because the wireless frequency band used differs in some countries. For example in the USA channels 1 - 11 are used, while in France channels 1 - 14 can be used.
Ensure that the locations match on both devices. If you are using a driver that isn't localised, assume that the H/PC is setup to use a the US frequency range and configure your WAP (temporarily) accordingly.
Note: In some countries it is illegal to broadcast on some frequency ranges that are legal in other parts of the world. Do check before altering these settings
Step 14: Your wireless monitor is misleading you, deal with it
The absolute most common problem that we see time and time again is requests where users state that their on device wireless utility states that they are connected, have a good signal, have a good link quality reading but nothing works.
Don't believe anything that the wireless utility is telling you. Most of the time they are very poor quality and are badly written.
The fact that is says you have a connection often means that the card has a carrier and preliminary beacon association with the Wireless Access Point (WAP). It does not mean that you have passed authentication and have a working layer 3 network connection - it means you have a working later 2 card will support this speed on the 2.4 GHz band. Note that 802.11a card are NOT 'WiFi' cards. They run at 5 GHz where as the WiFi standard runs at 2.4 GHz.
If you have been through all 15 steps in this article and you are still having problems, please post on the forums and the community will do its best to help. If you haven't, expect to be referred back to this article!
If in your testing you have concluded that a card does or does not work with a Windows CE version of particular device, please let us know either via the HCL submission form or on the forums, complete with any tips or special steps needed to get the device working. That way we can update the HCL and other members of the community will not have to repeat all of your activities to come to the same conclusion.
Acknowledgements
With thanks to Rich Hawley for helping with this article.
Published: August 25, 2011 | Article last Reviewed: July 9, 2019