Bricked by OTA Update! [Not rooted]
Hiya folks, bit of a problem. I never bothered to root or unlock my DNA (it's been getting the job done nicely with a few non-root customizations, and I have other gadgets to tinker away with). This morning I accepted the OTA update from Verizon, and now it's bricked - stuck on the HTC splash screen.
I did a soft reset, cleared the cache partition, and performed a hard reset - no dice. Called Verizon and HTC, no help - I can pretty much do a repair/replacement if I'm still under warranty. I'd really rather avoid going down that path, as I think I'm barely over the warranty (though I can hopefully get them to honor it if I'm within 30 days).
Is there any way I can still flash this back to an older stock, having never unlocked it? I can only get the thing into fastboot mode, and all of the instructions I've found are for when the phone's been bricked after rooting. adb can't seem to talk to it at all, probably because it's in fastboot. Is it safe to attempt using an RUU or some sort of image to flash it using the fastboot utility?
Since it's already bricked, I went ahead and made a go at it using an older RUU, but it quick before even trying, claiming I needed the correct version of the utility. It's possible I did it wrong, though.
Any help would be much obliged! This is what I get for not rooting/learning how to do this stuff earlier...
EDIT: Before this newest update, my phone had the most up-to-date stock ROM. It was fully charged when it performed the OTA.