I tried returning to stock by copying the PD98IMG.ZIP to sdcard and starting the phone on hboot mode, it loaded the file but then got wrong image message and the screen returned to hboot.
Tried running another RUU, copying the PD98IMG.ZIP to the temp folder and deleting rom.zip and renaming PD98IMG.ZIP to rom.zip. I booted the phone to fastboot usb then HTC screen with black background after that while updating/verifying the signature it failed with err155!
The phone was still ***unlocked*** with ship s-on, I am not sure what should I try next since I feel really deseparate after trying all the options.
I cant go beyond the htc logo screen when powering the device normally, is there anything I have missed or could there be any other way to get it back to stock???
**Note: Thanks Andy for the file, really appreciate your efforts and help***