This phone was not rooted prior to being stuck at the boot screen. Actually, it wasn't event stuck at the boot screen. Instead, it turned on and off. I installed PhilZ recovery and was able to backup all files. Then I tried to flash different versions of CM without success. They all get stuck at the boot screen now. No more turning on and off. I also tried to clear cache, wipe dalvik something and reset to factory. Is there something else that can be done? What would be the most likely cause for the failure?
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