How to Backup XDA II ROM

RELEVANT TOOLS

XDAII USB Cradle 
SD card with at least 32 MB memory (All data will be deleted during the process) 
Multi-Port/USB TTY – Download HERE
PRE-PREPARATION

Backup all data on your device, because this process involves hard reset. 
Kill ActiveSync (wcescomm.exe) by using task manager (Ctrl + Alt + Delete).
HERE WE GO

Go to bootloader mode (hold Power Button + Directional Pad + Reset Button) 
Run Muti-Port/USB TTY (romupdate.exe) 
Select "WCEUSBSH001" as a com port, for more details see figure below



Put the SD card in your device 
Go to the terminal windows, as below figure



For backing up only WinCE ROM to SD card, enter
"d2s" 

For backing up WinCE ROM, Radio ROM, and Extended ROM, enter
"d2s 80000000 02000000"
"d2s 60000000 00300000 sd a"
"d2s 70000000 01080000 sd a"

For backing up Radio and Extended ROM, enter
"d2s 60000000 00300000"
"d2s 70000000 01080000 sd a"

For backing up only Radio ROM, enter
"d2s 60000000 00300000"

For backing up only Extended ROM, enter
"d2s 70000000 01080000"
RESTORE

Put the SD card that contains backed up rom into your device. 
Go to bootloader mode (hold Power Button + Directional Pad + Reset Button) 
It will automatically prompt you to start dumping rom into your device. 
If nothing happens, just push camera button and it will automatically trigger.
Reference: xda-developer forum