Can not install any rom... Battery issue or Other?. Z00LD (ZE550KL)

[kowshikkhan.rcs]

Z00LD, ZE550KL

Using since May 2016. Still getting 3.5 hours SOT. Tested many ROM.
Last ROM was AOSP Extended 6.7, Pie. Everything was working well.

Today, I wanted to root my device. So I installed Magisk 20.3 zip via TWRP latest recovery (3.2.3 may be). After installing that zip it was started bootloop. I didn't create any backup. So I made a clean flash the same ROM and GApps(full).

Here, the problem has started. The GApps is not installing properly. Before 100% done, it reboots and bootloop starts.
I used adb and fastboot to go back stock. Everything was done perfectly. But still, boot loops.

Can not find any reason, is it battery problem or others?
Please Help!!!

 

[Phoniex_47]

Z00LD, ZE550KL

Using since May 2016. Still getting 3.5 hours SOT. Tested many ROM.
Last ROM was AOSP Extended 6.7, Pie. Everything was working well.

Today, I wanted to root my device. So I installed Magisk 20.3 zip via TWRP latest recovery (3.2.3 may be). After installing that zip it was started bootloop. I didn't create any backup. So I made a clean flash the same ROM and GApps(full).

Here, the problem has started. The GApps is not installing properly. Before 100% done, it reboots and bootloop starts.
I used adb and fastboot to go back stock. Everything was done perfectly. But still, boot loops.

Can not find any reason, is it battery problem or others?
Please Help!!!

When phone reboots after stock image flash where you pluged in? if while pluged in booting perfectly and without pluged in boot looping that is kind of battery issue!!