Na forum XDA znalazłem coś takiego - może się okazać pomocne dla tych którzy wgrali najnowszy stockowy ROM i nie mogą się od niego uwolnić (nie testowałem tej metody więc nie wiem czy działa) - opis po angielsku (ale trzeba uczyć się języków

)
A. Prerequisites:
1. Micro SD card (non HCSD that is <4GB)
2. The "PSAS" Software
3. PC with ActiveSync or MobileDeviceCenter Connection to your HD2 (Guest is good enough)
B. Make your SD Card a Gold Card:
1. Back up your system (especially your SD-Card!! for a Goldcard you have to format your SD-Card)
2. Format your Micro SD card with FAT32
3. Insert your formatted SD Card into your HD2
4. Connect your device to your PC (ActiveSync/MobileDeviceCenter)
1. Option 1: PSAS Full Version
1. Buy your PSAS Full Version (30€).
http://psas.revskills.de/?q=payment2. Following the link in the registration confirmation e-mail, download, install and activate PSAS
3. Start PSAS (needs administrator rights)
4. Goto "Calculators/Generators" - "Generate HTC Goldcard"
5. Select Device Key “LEO”
6. Click on "Get SD Card Serial from WINCE Device"
7. Choose the right SD Card
(note the Size under SD Card Info)
8. Click on "Save Goldcard Image to WINSCE SD"
(Alternatively, you can save the Goldcard image to file and write the image later - see Option 2.7)
9. Now your Goldcard is ready
2. Option 2: PSAS free Version
1. Download an install the PSAS Free Version:
http://revskills.de/downloads/psas.zip2. Start PSAS (needs administrator rights)
3. Goto "Hardware Forensics" - "WINCE SD Card Utils"
4. Click on "Get Serial and Disk ID".
5. Choose the right SD Card (note the size)
6. Copy the displayed CID
(i.E. 9E000000400000000000020002000000)
7. Send the CID to a friend owning the full version to prepare your image
8. If you don’t know one, send a PM to “pcwe” or “oliverweidel”
9. Once you have your image, click on “Write Image File”
10. Select the image you received (Goldcard.img)
11. Now your Goldcard is ready
C. Flash HTC Stock ROM
1. Download your 3.14 Stock ROM from HTC, Links you will find here:XDA 623283
2. Extract your Stock ROM (RUU_Leo_S_HTC_XXX_3.14.XXX_Radio_15.42.50.11U_2.1 5 .50.14_LEO_S_Ship.exe)
3. Copy RUU_signed.nbh to your Goldcard and rename it to LEOIMG.nbh
(Use the “Explore” Feature of ActiveSync / MobileDeviceCenter)
4. Switch Off your device (or remove the battery)
5. Press VOL Down and Switch Device on to enter Bootloader
6. Bootloader loads your Goldcard (grey screen) and flashes every part of your HD2 (Bootloader, Radio, OS…) Takes up to 10 mins.
7. When finished, Reboot your device
(remove/insert battery or press red button)
8. Congratulations, now your HD2 is unbranded!!
D. Install favored ROM (Artemis!)
1. Download your favored ROM
http://forum.xda-developers.com/showthread.php?t=6125802. Connect your device to your PC (ActiveSync/MobileDeviceCenter)
3. Run SSPL_RUU.exe with Artemis v40 RUU_Signed_0xxx.nbh in the same folder and follow the instructions
4. Hard reset
(Press VolUp+VolDown and still holding both press PowerOn and follow the instructions)
5. Boot to homescreen
6. When on homescreen –> Softreset
7. For more information, read the first page of the Artemis Forum:
http://forum.xda-developers.com/showthread.php?t=612580