Originally Posted by busted bones
Hey guys, just got an update for my own HTC One on T-MOBILE and the option for HDR is completely gone. I used this feature a lot, does anyone know if there's still a way to access it or do I need to get an app now?
You should get an update for your update to fix this relatively soon:
North America OTA Update thread. Discussions/issues (All US carriers) Updated 10-3-13
If not,I'd try the GOOGLE SERVICES FRAMEWORK trick,wipe the cache partition in recovery,re-boot & see if it (the amended/add-on update) [4MB] doesn't pop-up.