i did. downgraded to B then upgraded back to D. it was a ZVC phone so i dont know. but when i went back to fresh ZVD the rebooting stopped until the end of the day it started doing it again. i was thinking it might be from disabling apps in Auto Start Manager in Rom Toolbox Pro. i havent done that yet on the ZVB that im on so im seeing if it wont reboot and then when i disable the apps, see if it does reboot on ZVB. so far no reboots but i havent disabled any auto start apps, if that is the case, yet so well see how it goes.