I think I understand what's happening, but what I've read isn't clear. I have updated to KK in order to unlock the bootloader on my Motorola RAZR HD xt926. That all went fine. I've been using both CWM 6049 and TWRP 2710. I've tried flashing several ROM versions of Cyanogen and SlimKat and they all end up boot looping (hang at the red M). There are no errors during flashing. The only ROMs that will boot are Cyanogenmod nightlies after M8. Those nightlies, however, have issues (notably no GPS). Several others seem to have the same problems, but many are running these builds fine. If I (finally) understand correctly the stock KK update also updates the bootloader to a KK bootloader and there is no way to downgrade the bootloader. The post-M8 nightlies of CM can use the KK bootloader, but all else needs the earlier JB bootloader. Basically I'm wondering if I'm just stuck in a "too new" are and have to wait until KK bootloader compatible ROMs are available. Does this sound correct? Or can I just downgrade the bootloader to flash Cyanogenmod and Slimkat stable builds? Thanks in advance!