OTA update fails

Hi all,

I bought a 2nd hand HTC One m8, and today I tried to install the OTA fix for stagefright, and after my phone rebooted I was faced with the following error message (see attached photo): "Package expects build fingerprint of htc/telus_wwe/htc_m8:5.0.1/LRX22C/463267.2:user/release-keys or htc/telus_wwe/htc_m8:5.0.1/LRX22C/463267.3:user/release-keys; this device has htc/h3g_uk/htc_m8:5.0.2/LRX22G/509530.6:user/release-keys.".

After searching around, I found out that this is likely the result of rooting and modifying the system or flashing a custom recovery. So I booted into HBOOT and was greeted with (see 2nd photo):

Code:

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*** Software status: Modified ***
*** RELOCKED ***
M8_UL PVT SHIP S-ON

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Which seems to indicate that the device has indeed been tampered with.

I've searched around to try to figure out how I can restore my device to 100% stock firmware, but they all seem to require unlocking the bootloader and rooting the device. Do I have a simpler option? I tried saving the OTA zip file and extracting recovery.img from the firmware.zip file, but when I try to flash it via "fastboot flash recovery", I get:

Code:

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target reported max download size of 1826414592 bytes
sending 'recovery' (13218 KB)...
OKAY [  1.451s]
writing 'recovery'...
(bootloader) signature checking...
FAILED (remote: signature verify fail)
finished. total time: 1.923s

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It seems strange that the stock recovery image fails the signature verification?

I'd really appreciate any advice on how to resolve this situation - and preferably an option which doesn't require wiping my entire phone, since it takes me hours to set everything back up again...

If you've managed to read this far, I am grateful :) I never intended to mess around with the phone in the first place, I guess that's what I get for buying second hand....

PS. The phone is from Telus

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