[Q] CHALLENGE BRICK -- S-ON - HBOOT - 1.54 - UNLOCKED - no OS
I have been playing around with this for the past 24 hours almost non-stop. The device information:
M7 T-Mobile (converted to GE 4.3)
No OS installed at this point
S-ON (Unfortunately big mistake not to take care of this during conversion)
Can do adb and fastboot commands, but anything that I try to write to system (from a ZIP file either RUU or custom ROM, they error out)
fastboot oem rebootRUU then trying to flash would give me: FAILED (remote: 99 unknown fail)
trying to update the bootloader from the same package I get: FAILED (remote: 12 signature verify fail)
I can flash boot and recovery images and that's about it, tried both CWM and TWRP to install CynogenMod, they both fail.
Here is the history of what happened:
Day one, I wanted to convert to GE so I did and everything worked, the device wasn't rooted or anything so it was fully GE. (S-ON though). Yesterday, when 4.4 OTA came, I went aehead and installed, everything installed fine OS booted to lock screen, but as soon as launcher was initiated, the phone would restart within 3 seconds (first mistake was to update through OTA, but I thought I was converted completely so trusted it). Second mistake was I said, well I will just reinstall all the apps since nothing worked after trying for hours so I did a wipe and reset factory and now, it would boot to the setup screen and after 3 seconds like before, it would restart, so I decided to get rid of whatever on there from fastboot and that's where I stand today. I played with it for hours yesterday and today and I have tried the toolkit, revnov (which doesn't work with 1.54 and rumrunner requires the device to boot to OS, which I don't have).
I feel like I have managed to brick it even with being able to send and execute commands.
Any help would be immensely appreciated.
TWRP comes up with a password prompt right at the beginning as if the data on the phone is encrypted. I never encrypted the phone in any way, I did have corporate email that had the right to wipe the device.