Lollipop OTA update failed on HTC One

The Lollipop OTA update did not complete and got interrupted on my HTC One M7 (not sure how). Now have red triangle and red exclamation point. Have tried Recovery and Factory Reset with no success. When I select "Apply from Phone Storage" in the system recovery menu, I get a CID error. I think somehow the factory software is now corrupted or erased and the Lollipop update is not complete in memory, so I may not have any valid recovery software internal to the device at present. Is there any way to fix this? The device currently stays in a reset loop, pausing for awhile on the red triangle/red exclamation point, unless I use the bootloader menu to power down. As present I can only get to the bootloader menu and the recovery menu. The Bootloader menu currently shows that my OS version is 5.28.605.12, which I think is Lollipop. I like my phone a lot and really don't want to buy a new phone just because Verizon pushed an OTA to it that broke it. Any help anyone can provide would be greatly appreciated.

Accepted answers

Tidbits

Almost 0. Htc is the only one that can officially help you. there is a download mode for HTC. When you flash the Ruu actually puts you in it. Just try and see what happens you got nothing to lose.

All comments

smith6612

Please try using the HTC Sync Manager to reinstall the software to the phone. The Verizon model HTC phones, dus to Verizon's software update policy, don't have the ROMs available for flashing on the HTC website. They can only be accessed through the Sync Manager, which mameans fixing this issue annoying.

HTC Sync Manager Overview | HTC United States

MDMark

Thanks very much for your kind reply. I tried HTC Sync Manager, however my phone is in a state where I can't get my PC, and HTC Sync Manager, to recognize it is connected. During brief periods of the reboot cycle it is stuck in, or when the bootloader menu is displayed, it shows up as a drive, but I can't access any files, nor does HTC Sync Manager respond at all. Any thoughts on this?

Tidbits

Did you try turning on developer settings and then turning on adb?

MDMark

No, but I don't know how to do this. I don't see any options like that in HTC Sync Manager. If you're speaking about turning this on on my phone, I don't know how I could do this either, considering the state of the phone currently. Where can I turn these on?