Without OS and lost TWRP after trying to Relock need help installing any Rom

[Xephas]

Here's my specs : Software status : Modified
RELOCKED
M8_UL PVT SHIP S-ON
HBOOT-3.19.0.0000
RADIO-1.29.214500021.12G
OpenDSP-v51.2.2-00593-M8974_F0.1015
OS-
eMMC-boot 2048MB

I lost my custom OS( ROM) was using resurrection remix had ton of issues on my phone , random hangs & bugs etcc
I wiped my system tried to install the stock htc rom , I read somewhere that i have to relock my phone & i did through fastboot with the command
fastboot oem lock & it got locked . now I'm stuck with a locked phone & can't access twrp anymore maybe cuz relocked & without an OS.
I tried to flash twrp again through fastboot but i couldn't got an error prolly cuz the phone is stuck relocked.
Help me please I'm desperate .
INFOversion: 0.5
INFOversion-bootloader: 3.19.0.0000
INFOversion-baseband: 1.29.214500021.12G
INFOversion-cpld: None
INFOversion-microp: None
INFOversion-main:
INFOversion-misc: PVT SHIP S-ON
INFOserialno:
INFOimei:
INFOimei2: Not Support
INFOmeid: 00000000000000
INFOproduct: m8_ul
INFOplatform: hTCBmsm8974
INFOmodelid: 0P6B10000
INFOcidnum: HTC__001
INFObattery-status: good
INFObattery-voltage: 0mV
INFOpartition-layout: Generic
INFOsecurity: on
INFObuild-mode: SHIP
INFOboot-mode: FASTBOOT
INFOcommitno-bootloader: 76df2b54
INFOhbootpreupdate: 11
INFOgencheckpt: 0
all: Done!

 

[redpoint73]

I lost my custom OS( ROM) was using resurrection remix had ton of issues on my phone , random hangs & bugs etcc
I wiped my system tried to install the stock htc rom , I read somewhere that i have to relock my phone & i did through fastboot with the command
fastboot oem lock & it got locked . now I'm stuck with a locked phone & can't access twrp anymore maybe cuz relocked & without an OS.

The goal of relocking bootloader is to flash the RUU (corresponding to your CID). Did you do that? Did you try it, and run into problems? If so, describe all the specific info (exactly where in the process it failed, error messagese, etc.). Which RUU(s) did you try (exact file name and version number).?

The correct RUU was linked for you in the other thread you started.

I tried to flash twrp again through fastboot but i couldn't got an error prolly cuz the phone is stuck relocked.

You can't flash TWRP with a locked (or relocked) bootloader. That is the whole point (and definition) of a locked bootloader. You can unlock it again by fastboot flashing the original unlock token you used (to originally unlock the bootloader). Or you can get a new token by going through the HTCDev process again.

 

[Xephas]

Thank you for clarifying all of that . I ended up looking in the forum & found this https://forum.xda-developers.com/htc-one-m8/help/tutorial-how-to-stock-stock-twrp-t3086860.
I ended up installing 6.12.401.4_ckpv5. & everything seemed fine . till lately apps started crashing for no reasons i tried almost everything clearing cache & data , disabling some apps nothing worked . the phone resets aswell randomly .
I wanted to boot to recovery , couldn't . I only can access to bootloader & when i press recovery it doesn't work , it just loop me back to bootloader .
same for factory reset . later on i couldn't even access to my rom the phone just boots to bootloader & stay looped there , nothing works .
No recovery no factory reset. I tried some fastboot commands they all get blocked & give me errors like this :
fastboot erase cache
erasing 'cache'... FAILED (remote: erasing error!)
finished. total time: 5.018s
same for fastboot flash recovery etccc same failed remote error. so I can't install any kind of recovery.
I tried this too : https://forum.xda-developers.com/showpost.php?p=64926626&postcount=6
The RUU method & i got almost the same error , ... INFOError: Command never completed .
So even the RUU commands aren't working . Still stuck on bootloader so please help me this is stressful .
INFOversion: 0.5
INFOversion-bootloader: 3.19.0.0000
INFOversion-baseband: INVALID_VER_INFO
INFOversion-cpld: None
INFOversion-microp: None
INFOversion-main:
INFOversion-misc: PVT SHIP S-ON
INFOserialno: FA43YWM01905
INFOimei: 358714057693396
INFOimei2: Not Support
INFOmeid: 00000000000000
INFOproduct: m8_ul
INFOplatform: hTCBmsm8974
INFOmodelid: 0P6B10000
INFOcidnum: HTC__001
INFObattery-status: good
INFObattery-voltage: 0mV
INFOpartition-layout: Generic
INFOsecurity: on
INFObuild-mode: SHIP
INFOboot-mode: FASTBOOT
INFOcommitno-bootloader: 76df2b54
INFOhbootpreupdate: 11
INFOgencheckpt: 0
all: Done!
finished. total time: 0.010s