Z3 Boot loop and I've tried everything

[proveisso]

I've searched, I've googled, I've tried every and anything I could find.

Everything was running fine, I had Carbon ROM installed, weeks running with no problem. Then suddenly, the phone reboots (it was working fine, I was driving with Waze and Spotify) and goes on boot loop.

Flashtool identifies when the phone connects either on flashmode and fastboot, but doesn't seem to recognize the device, since the "Device" menu is always greyed out. Flashed quite a few different FTFs but none of them seem to work - bootloop keeps happening. Tried even fastboot erase and then flashing, but nothing.

I've tried flashing D6643_Claro BR_1289-1603_23.5.A.1.291_R6D, D6643_Commercial and Journalists_1288-6341_23.0.A.2.93_R4B and D6653_Service Exchange Unit_1288-3458_23.0.A.2.93_R4B but none of them seem to work, the phone continues on bootloop.

Sometimes it'll even reboot while flashtool is doing it's thing.

I've been at this for 2 days and yet can't seem to figure out how to make the damn piece of crap work again. Any ideas?

 

[jj27_6]

Good night. I do not know if you have tried this.
In flashtool pick wipe everything because in Nougat the partitions are different to Marshmallow and if you flash without wipe everything the installation of the rom will not be correct.
Try this and I will wait you have luck and you phone works again.

 

[proveisso]

Wipe everything, you mean in the Firmware Selector window? The only options that show up are APPS_LOG and USERDATA

 

[proveisso]

Ok, looks like the phone ran out of juice and when I plug it in the wall charger, it bootloops instead of charging =(

 

[proveisso]

Searching some more, I've found this post talking about a lose battery wire. I changed my battery a couple weeks ago, this could fit the case...
https://forum.xda-developers.com/xperia-z/help/hardware-fix-xperia-z-charging-booting-t2760911