To all of you here experiencing this.
The Joyings (and most other brand units) can become very hot.
When doing a firmware flashing, especially on the old Sofia units, the unit can become so hot during flashing when all apps are being optimized, that it automatically switches off, and then has to start again. And of course it will get just as hot as the first time and reboots again, and again, and again........
The gtxaspec rom has most apps pre-optimized, so this optimizing step is almost completely skipped which makes the unit less hot during flash.
It helps to take your unit out of the dashboard during flash and cool it with a hair dryer (on cold of course) or fan, or install a heatsink and/or fan.
The Joyings (and most other brand units) can become very hot.
When doing a firmware flashing, especially on the old Sofia units, the unit can become so hot during flashing when all apps are being optimized, that it automatically switches off, and then has to start again. And of course it will get just as hot as the first time and reboots again, and again, and again........
The gtxaspec rom has most apps pre-optimized, so this optimizing step is almost completely skipped which makes the unit less hot during flash.
It helps to take your unit out of the dashboard during flash and cool it with a hair dryer (on cold of course) or fan, or install a heatsink and/or fan.
(a.k.a. surfer63 on XDA)