[Q] Cant Upgrade to Lollipop (Error Msg included) topic

Hi Everyone

I've got a HTC One M8 which I bought off a forum which was already rooted and runs GPE.

Everything has been fine, but I've been receiving the notifications to update to Lollipop, which I'd like to do. I click on the update and it downloads it. When it goes to install the update the phone reboots and boots into TWRP. I click on install and select the update zip. but I then get an error, please see the attached images.

Can anyone shed on any light on whats going wrong?

THanks in advance fo all replies

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