This mostly applies to folks who have flashed the leaked ota and want to go back to legit stock. There is generally a problem with that, because we cannot use the RUU due to the upgraded Hboot (no radio has nothing to do with it). Through my travels, I found a way to do it. This is not without its risks, and I take no responsibility for any broken phones, knocked up cats, or homeless hamsters caused from the havoc it may wreak. It did work for me, quite well. I was able to flash to an old RUU without issue like nothing ever happened. First, the link I used, and then the english version. [HOW-TO] Downgrade HBOOT - HTCPedia.com forums Need the RUU? http://www.mediafire.com/?ld1gm3bbddcbwdw Now, my instructions, which will hopefully simplify it. I take no credit for this by the way, credit is due to the original thread. 1. Download and unzip the files I have attached to this thread and put them somewhere that you can push them with adb. 2. You must used Unrevoked's latest tool to install clockwork. 3. Boot into clockwork recovery, go to partitions, and mount data. 4. Type this code: Code (Text): adb push flash_image /data adb push mtd0.img /data adb shell chmod 777 /data/flash_image cd /data flash_image misc mtd0.img exit adb reboot oem-78 Watch for your phone to reboot to a silver HTC logo. Then type: Code (Text): fastboot devices Verify your device shows up/responds/etc. Start the RUU. It will complain that battery life is too low to continue. Hit Exit, and it will reboot your phone. Run the RUU again. It should successfully flash your phone, downgrading you successfully. Having troubles with the RUU giving connection errors? Do this. Go to start, and in the search/run box, type %temp% Delete all that you can. Make sure the RUU is not running in the background. Now run the RUU again. Once it starts to the first screen, it has extracted the files to the temp directory. You can then copy them to a safe place. It will be a long winded numbered folder, with a similar subfolder. Once you have copied it to a safe place, you can then copy adb.exe, fastboot.exe, and adbwinapi.dll from the latest SDK into it, overwriting the older copies. Then start the RUU by executing ARUWizard.exe. This fixed the problem for me. You can also rename the rom.zip contained within the extracted files to PB31IMG.zip and put it on your sd card. Booting to HBOOT will scan it and offer to install. Good luck!