HTC One – No OS. Fail to install ROM from TWRP

[2ma2]

Hi

Anyone knows how to move forward from here. I don’t know if this is a TWRP or Cyanogen issue.

My HTC One M7 failed to update HTC Sense, and went into boot loop.
So I decided to use TWRP to wipe, and install this custom ROM:
cm-12.1-20151007-SNAPSHOT-YOG4PAO334-m7.zip But it fails ..

I managed to use ADB to download latest Cyanogen mod, to /sdcard/ on the device.
But installing fails with error. This a paste from log: I think this is the essential part. The rest is uploaded:
..
Zip contains SELinux file_contexts file in its root. Extracting to /file_contextsminzip: Extracted 3 file(s)

could not detect filesystem for /dev/block/platform/msm_sdcc.1/by-name/system, assuming ext4

mount: failed to mount /dev/block/platform/msm_sdcc.1/by-name/system at /system: No such file or directory

about to run program [/tmp/install/bin/backuptool.sh] with 2 args

grep: /system/build.prop: No such file or directory

Not backing up files from incompatible version: 12.1

run_program: child exited with status 127

about to run program [/tmp/install/bin/otasigcheck.sh] with 1 args

unmount of /system failed;
..

 

[2ma2]

Just found a solution:
Flashed TWRP
C:\Privat\adb>fastboot flash recovery twrp-2.8.4.0-m7.img
target reported max download size of 1514139648 bytes
sending 'recovery' (11994 KB)...
OKAY [ 1.591s]
writing 'recovery'...
OKAY [ 0.844s]
finished. total time: 2.446s
Then installed CM12 again.
That seemed to work ok. UnfortunatelyCM12 kept rebooting after 1 minute again and again.
Then a Factory reset in TWRP
After install of CM 12 again everything seems stable now.