[MDA III, XDA III, PDA2k, 9090 ROM Development] Chef_Tony:
In correspondance with cosmicgate, i decided to post our guide on how to upgrade here, to avoid question further questions about that:

THESE INSTRUCTIONS ARE SUITABLE FOR WINDOWS XP COMPUTERS ONLY!!!

For people running WM5/6x but with 43MB of storage:

You have to downgrade to WM2003 and here's how to do that:

1. Download this Windows Mobile 2003 SE rom:

Download from Rapidshare

Download from Uploaded.to

and extract it to a folder of your choice.

2. Remove both the the SIM card and the sd card

3. Put the device into Bootloader Mode, pressing power+record and reset

4. your device display shows Serial v2.0x

5. on the pc (running Windows XP!) open the Task manager, go to the 2nd tab (Processes) and kill "wcescomm.exe" and "WCSEMgr.exe"

6. Now let's start the actual Upgrade:

7. Navigate to the Upgrade folder

8. Start Maupgradeut_noid

9. If in the 2nd window the rom version is not shown, something went wrong, start over!

10. Then start the upgrade and you should see a progress bar, also look at the device's display, it should also show the progress.

11. After it finishes perform a "WM2003 hard reset" by pressing power and reset

12. wait for the extrom to finish

13. now you can re-insert your sim and sd card (if you are planning to go on from here, you can also leave them out).

14. proceed with "For devices running wm2003"

For devices running wm2003:

1. Copy repart_doc.exe and the unlocker cab to the device and install the unlocker. In the start menu you will find a folder named "Extrom Tool".

2. Click "unhide" (if you are getting an error message, proceed with 2.a, else with 3.)

2.a the unlocker installs into the standard folder for program files, which depends on the rom language can be "\programme" or "\programmes" etc.

2.b the link in the start menu always points to "\program files"

2.c the easiest way, to solve that, is to rename your program files folder to "\program files"

2.d that destroys parts of the system, but doesn't matter because it is just needed for unlocking

2.e since now the link location should be correct, proceed with step 3.

3. Click "unlock", maybe a soft reset is needed.

4. Start repart_doc.exe

5. Set the future size, if not pre-entered, to 128kb (smallest possible partition size on this file system)

6. Click "Format now!"

7. Soft reset

8. Go back to the Extrom Tools

9. "Lock"

10. "Hide"

11. Now proceed with "Upgrading a WM5/6 device"

Upgrading a WM5/6 device

1. Remove both the the SIM card and the sd card

2. Put the device into Bootloader Mode, pressing power+record and reset

3. your device display shows Serial v2.0x

4. on the pc (running Windows XP!) open the Task manager, go to the 2nd tab (Processes) and kill "wcescomm.exe" and "WCSEMgr.exe"

5. Now let's start the actual Upgrade:

5.a copy the downloaded nk.nbf to any given folder, let's call it Upgrade 28008

5.b copy the contents of this package to the same folder: MAupgradeUt_noID

5.c Start MAupgradeut_noID

6. If in the 2nd window the rom version is not shown, something went wrong, start over!

7. Then start the upgrade and you should see a progress bar, also look at the device's display, it should also show the progress.

8. After finishing, take the device out of the cradle take out the battery and insert the SIM card

9. copy the EXTROM folder to the sd card and insert the sd card

10. Hard reset the device, pressing reset+power and record+camera and in the menu, that appears set:

Enable_Kitl: NO

Clean Registry Hive: YES

Format Storage: YES

using the camera and record buttons.

11. press the mail button to confirm your selection.

12. your device starts for the first time, you align the screen and let the extrom install, it soft resets and your device is ready to use