[One (M7) Android Development] angusc:
Heart stopping isn't it...........

I had the exact same happen to me today after confirming above that it was safe to go ahead and update my firmware. So this is what happened and how I managed to recover in a few minutes off sanity:

First I was running ARHD 10.1 with s-off and superCID. I had already made a new CWM NANDROID backup. I also still had the original ARHD 10.1 Rom on my sdcard.

So following the firmware update advice for s-off users (no need to relock bootloader) go straight to "fastboot oem rebootRUU" then flash the firmware, the first time it flashed it said successful but also said to immediately reflash. On the second attempt I got a lot more message output from the fastboot cmd window, but ended with a success message (see code below).

Next I "fastboot reboot-bootloader"

All looked good but can't reboot device to Rom, white HTC screen appeared for a few seconds then black screen.....nothing.....fastboot devices resulted in "waiting for device".........

Held down the power button and button lights flash..... Restarts but same again, followed by black screen with device picture and red triangle....oh shut.......

Held power again then once button lights flash release power button, hold down -VOL + power again and got in to bootloader screen. Select fastboot and reflash CWM (using the All-in-one Toolkit from Hasoon).

Select recovery then install from sdcard and select original Rom file, install without wipe.

After flash reboot device.

After full startup bout back to recovery.

Restore NANDROID backup.

All good again.

Later I reflashed modified HBOOT with out the red warning message.......phew all done!

My ADB Output:

c:\android-sdk\platform-tools>fastboot oem rebootRUU
...
(bootloader) Start Verify: 0
OKAY [ 0.047s]
finished. total time: 0.048s

c:\android-sdk\platform-tools>fastboot flash zip firmware.zip
sending 'zip' (37873 KB)...
OKAY [ 2.730s]
writing 'zip'...
(bootloader) zip header checking...
(bootloader) shift signature_size for header checking...
(bootloader) zip info parsing...
(bootloader) checking model ID...
(bootloader) checking custom ID...
(bootloader) start image[hboot] unzipping for pre-update check...
(bootloader) start image[hboot] flushing...
(bootloader) [RUU]WP,hboot,0
(bootloader) [RUU]WP,hboot,99
(bootloader) [RUU]WP,hboot,100
[b](bootloader) ...... Successful
FAILED (remote: 90 hboot pre-update! please flush image again immediately)[/b]
finished. total time: 4.292s

c:\android-sdk\platform-tools>fastboot flash zip firmware.zip
< waiting for device >
sending 'zip' (37873 KB)...
OKAY [ 2.895s]
writing 'zip'...
(bootloader) zip header checking...
(bootloader) shift signature_size for header checking...
(bootloader) zip info parsing...
(bootloader) checking model ID...
(bootloader) checking custom ID...
(bootloader) start image[boot] unzipping & flushing...
(bootloader) [RUU]UZ,boot,0
(bootloader) [RUU]UZ,boot,10
(bootloader) [RUU]UZ,boot,23
(bootloader) [RUU]UZ,boot,36
(bootloader) [RUU]UZ,boot,49
(bootloader) [RUU]UZ,boot,61
(bootloader) [RUU]UZ,boot,74
(bootloader) [RUU]UZ,boot,85
(bootloader) [RUU]UZ,boot,95
(bootloader) [RUU]UZ,boot,100
(bootloader) [RUU]WP,boot,0
(bootloader) [RUU]WP,boot,99
(bootloader) [RUU]WP,boot,100
(bootloader) ...... Successful
(bootloader) start image[recovery] unzipping & flushing...
(bootloader) [RUU]UZ,recovery,0
(bootloader) [RUU]UZ,recovery,11
(bootloader) [RUU]UZ,recovery,21
(bootloader) [RUU]UZ,recovery,32
(bootloader) [RUU]UZ,recovery,44
(bootloader) [RUU]UZ,recovery,72
(bootloader) [RUU]UZ,recovery,85
(bootloader) [RUU]UZ,recovery,97
(bootloader) [RUU]UZ,recovery,100
(bootloader) [RUU]WP,recovery,0
(bootloader) [RUU]WP,recovery,99
(bootloader) [RUU]WP,recovery,100
(bootloader) ...... Successful
(bootloader) start image[sbl1-1] unzipping & flushing...
(bootloader) [RUU]UZ,sbl1-1,0
(bootloader) [RUU]UZ,sbl1-1,100
(bootloader) signature checking...
(bootloader) verified fail
(bootloader) ..... Bypassed
(bootloader) start image[sbl1-2] unzipping & flushing...
(bootloader) [RUU]UZ,sbl1-2,0
(bootloader) [RUU]UZ,sbl1-2,100
(bootloader) signature checking...
(bootloader) verified fail
(bootloader) ..... Bypassed
(bootloader) start image[sbl1-3] unzipping & flushing...
(bootloader) [RUU]UZ,sbl1-3,0
(bootloader) [RUU]UZ,sbl1-3,100
(bootloader) signature checking...
(bootloader) [RUU]WP,sbl1-3,0
(bootloader) [RUU]WP,sbl1-3,100
(bootloader) ...... Successful
(bootloader) start image[radio] unzipping & flushing...
(bootloader) [RUU]UZ,radio,0
(bootloader) [RUU]UZ,radio,7
(bootloader) [RUU]UZ,radio,13
(bootloader) [RUU]UZ,radio,20
(bootloader) [RUU]UZ,radio,26
(bootloader) [RUU]UZ,radio,33
(bootloader) [RUU]UZ,radio,40
(bootloader) [RUU]UZ,radio,46
(bootloader) [RUU]UZ,radio,53
(bootloader) [RUU]UZ,radio,60
(bootloader) [RUU]UZ,radio,67
(bootloader) [RUU]UZ,radio,73
(bootloader) [RUU]UZ,radio,79
(bootloader) [RUU]UZ,radio,87
(bootloader) [RUU]UZ,radio,93
(bootloader) [RUU]UZ,radio,99
(bootloader) [RUU]UZ,radio,100
(bootloader) [RUU]WP,radio,0
(bootloader) [RUU]WP,radio,26
(bootloader) [RUU]WP,radio,53
(bootloader) [RUU]WP,radio,79
(bootloader) [RUU]WP,radio,100
[b](bootloader) ...... Successful[/b]
OKAY [ 13.658s]
finished. total time: 16.556s

c:\android-sdk\platform-tools>fastboot reboot
rebooting...

finished. total time: 0.034s

[b]c:\android-sdk\platform-tools>fastboot reboot
< waiting for device >[/b]

Sent with desire from My One