ipaq 3850 downgrade from WM2003

[cruisin-thru]

Can I use any of the tools available here, or are there others I can use to downgrade an ipaq 3850 from wm2003, (upgraded by usb bootloader), the problem is that the ipaq wireless pack just will not work with this configuration, when I try to flash an earlier rom I get the error because 3850 isnt supposed to have WM2003. Any help greatly appreciated.

[SLUG]

Download the BIOS version 1.20 on this site http://h18007.www1.hp.com/support/files/HandheldiPAQ/us/locate/71_2594.html

You should extract the CAB file and place it on your Pocket PC. Then execute it, after it's complete you will be back to Pocket PC 2002. By the way can you post the 2003 ROM up here, I would like to run a Kitchen on it and see if we can customize it. Possibly even correct the problems your currently having. Hope this helps!!

[cruisin-thru]

How do I upload a file? The wm2003 works fine but it seems to have a problem with the wireless gsm/gprs sleeve, the sleeve attempts to initialise but stalls, I think it is even corrupting the files in rom/ram on the sleeve as I have had to open the case twice to disconnect the battery after trying to use it with the 3850 wm2003, it then wont be seen by any other ipaq, weird.

[Sebi]

Hi cruisin-thru !

Try this:

In order to downgrade to PPC2002 you must follow this : Download the 2002 ROM and extract the ROM file. This ROM file is 16 bytes bigger than the 2003 one. The 16 bytes difference in the 2002 ROM is header information. With a HEX editor strip the first 16 bytes. Both 2003 and 2002 files are now equal in size. Rename the 2002 file to the same name as the 2003 file, and follow the same instructions as you used for upgrading to 2003.

Regards,
Sebi

[SLUG]

You can post a link to it or I can give you an FTP address to post it to. I currently have the 3870 ROM and do not want to mess up the Bluetooth stack on it, the 3850 ROM does not have this built in so it should be easier to work with using the XDA kitchen. As for the download from the link I gave you, apparently the FTP server at HP is down at this time. :?

[cruisin-thru]

I have downloaded that 1.2 rom, I have copied the unpacked files to my pocket pc, none of them will execute, what is it am I supposed to do.
Oh by the way, the rom file I have in the 3850 does have bluetooth features.

[SLUG]

The extracted files should contain a file with a .CAB file extension, this is the one you want to execute. As for the 2003 ROM I'll see if I can find one for the 3835 series since they shouldn't have the Bluetooth stack in the ROM. Hope this helps!

[cruisin-thru]

There is no cab file contained within the 1.2 file, do you have a link to anywhere I can get the file you are referring to.?

[cruisin-thru]

I found a 2002 rom cab file, I put it on my ppc and it says "This rom update is for ppc version 3.0.11178 but this device is pocket pc version 4.20.13100. Installation cannot procedd."

[SLUG]

Sounds like the only way to do this is a SD card install, unfortunantly, I'm not sure how the Ipaq accomplishes this.

[cruisin-thru]

I am at a loss how to revert to original 3850 rom, I have another 3850 here that I can get a backup rom from, but no way of putting it back in the other 3850 that has been flashed with WM2003. I looked at the Asset viewer and it says my wm2003 ipaq 3850 has not got a color screen either, I think maybe this rom wm2003 is for 3870 bluetooth version :?

[Sebi]

Hi !!!

Try this !!! It is working !!! I try it, I use it !!!

In order to downgrade to PPC2002 you must follow this : Download the 2002 ROM and extract the ROM file. This ROM file is 16 bytes bigger than the 2003 one. The 16 bytes difference in the 2002 ROM is header information. With a HEX editor strip the first 16 bytes. Both 2003 and 2002 files are now equal in size. Rename the 2002 file to the same name as the 2003 file, and follow the same instructions as you used for upgrading to 2003.

[cruisin-thru]

Thanks for that Sebi, but the rom for WM2003 was a lot bigger than the 2002 rom, the rom I need is 31.745 kb the rom I flashed is 32.768 kb, does that make any difference? I think the rom I flashed is probably the 3870 rom as the bluetooth stuff is in there.

[cruisin-thru]

For anybody interested, I managed to downgrade ok. I downloaded an upgrade file from HP, ran the program with a "normal" 3850 in the cradle, it asked did I want to upgrade or backup existing rom, I did a backup. I then ran the program again, when it asked me if I wanted to backup, upgrade or restore, I told it I wanted to restore the file that I had just backed up, it then told me to put my ipaq in bootloader mode, instead of putting the "normal" ipaq in bootloader, I switched machines for the one I needed to downgrade, I put this in bootloader mode, put it in the cradle and away it went. I now have a 3850 running wm2002 instead of wm2003 which for some reason doesnt want to operate with ipaq wireless pack. :)

[David96Z]

For anybody interested, I managed to downgrade ok. I downloaded an upgrade file from HP, ran the program with a "normal" 3850 in the cradle, it asked did I want to upgrade or backup existing rom, I did a backup. I then ran the program again, when it asked me if I wanted to backup, upgrade or restore, I told it I wanted to restore the file that I had just backed up, it then told me to put my ipaq in bootloader mode, instead of putting the "normal" ipaq in bootloader, I switched machines for the one I needed to downgrade, I put this in bootloader mode, put it in the cradle and away it went. I now have a 3850 running wm2002 instead of wm2003 which for some reason doesnt want to operate with ipaq wireless pack. :)

You did what I was going to suggest to you. FYI there are no WM2003 drivers for the GSM/GPRS Wireless Pack.

[tcmail]

Gentlemen, knowing these posts were years ago. Appreciate if you guys still have the PPC 2003 for Ipaq 3850 or tell me where to get it. I have one in the store room and would like to upgrade it for my kid.

Please let me know (tcmail@yahoo.com)

regards,
tc