Hi everyone so customer didn't want the phone in the end as it couldn't be repaired so didnt bother returning to pick it up so like I do with all things I tinker and I've spent a long long time trying to fix the OS and I have finally done it yayyy scored myself a free U11,
So I dont know how it managed to work, because I had main version 2.33.710.9, and the package that actually worked to repair it and flashed was main version 1.11.710.5 or something like that, my bootloader was re locked and S-ON and nothing I tried would work phone had no recovery and would not boot all i would get is your device is corrupt, couldn't unlock the bootloader again all I would get is a message to state the 3 killswitches are active and to disable them but couldn't without a functional OS.
The 1.11.710.5 file I tried over the course since last post with normal fastboot didn't work, then I tried a series of htc_fastboot didnt work, I even used the fastboot binaries provided by HTCdev that didnt work, I tried every command I could rack up in my brain but still the body thing wouldnt flash I fixed roughly 6 RUU flash errors I was facing but the only one I couldn't get past was Ruu security fail zip from USB command, this told me it was something system wise, but had reinstalled everything including drivers gave all fastboots elevated privileges tried a million diff computers and cords ( lucky I run a phone shop hehehe )
Now something has completely slipped my mind I had a HTC 10 batch tool on my computer and had completely forgotten it had it's own terminal interafce, (which is a fully sik purple might I say) all I did was place the file into the path that the batch took was installed to which was com I do believe and then opened the batch tool up & typed " htc_fastboot oem rebootRUU" after i had put the device into download mode and connected device,
Device rebooted to RUU, all I did was type htc_fastboot flash zip <file_name> and it flashed all 28 zips from the 1.11.710.5 device rebooted and was now met with the HTC logo and phone booted straight up like nothing ever happened, once I had gotten the FRP lock removed (only took 5 minutes) not very good HTC lol I then went to the setting menu to software Info only to find out that the firmware was still 2.33.710.9 but the firmware file was specifically 1.11.710.5 as i had gotten it from the google spread sheet here on xda developers,
So there you have it everyone I hope this helps you repair your devices it seems it's all in the terminal used to flash the device as long as the file is also signed though I can't be 100% on that as I'm not sure the zip i used was signed either but anyway phone is working great and now it gets to be used and abused as a dev phone for myself