[Q] Killed my Tab 4 (SM-T230NU)
I was looking to factory reset my Tab 4 7.0 to sell, but since I've rooted it and installed TWRP, the process wasn't as simple as I'd have liked. I tried the standard Factory Reset function of TWRP, but it didn't do anything. I tried Wipe Data, still nothing. Then I did an Advanced Wipe and checked off everything, not realizing one of the options was to wipe /system. Now my Tab 4 keeps rebooting to TWRP, and the recovery also states "No OS is installed".
I'm currently downloading the new NH1 firmware from SamMobile and considering flashing it through Odin 3.09. Would this be the most effective method, considering I had no prior backup made to the tablet? Will this likely remove my root access and custom recovery? Is there a chance of tripping something like a Knox counter and bricking my device (happened once when I tried an old method to root my Note 3, Knox blocked part of the flash and left the system halfway between two OS images)