You need an encrypted ruu that is newer than what you have. Unfortunately, the newest is the only one I have. You cannot flash it via fastboot anymore either as attempting to will give you the same signature error. You must use the exe I have posted here. I repeat, you cannot flash this zip using any other method.
there are strange problems.
After I flashed successful newest Hboot from your post , right now I cannot go back in RUU mode and therefore, I can not use the RUU application
I have now after the command "fastboot oem rebootRUU" phone just reboots and is white screen with HTC logo infinitely!!!
What could be the problem?