I made the jumper as Raziel19935 have done, after that it started to show the orange led charging and then the blinking part but it's better than not showing anything.
i plugged a charged with the cable damaged with the positive touching the negative, and after than the rog never turn on again, seeing the orange led was like a call from the rog saying " yeah bro i'm still alive "...

I need to disassemble again the rog ally 😓
but when i made the injection the cells was giving 14.8v.
​14.8.when i connect the charger and measure the values it gives 14.9v and after seconds it starts blinking and give the same value as the cells 14.8v.
i think it can really be the battery.
As the BMS it's not comunicating the EC and PD make a dumb comunication and gives only a little bit more than the 14.8v
When i only had 14.7v it was giving 14.8v.
idk if it make sense what i'm saying but it's my theory.
Already purchased only a battery for the Ally,...

I was thinking maybe even injecting the volts from the cells it can still don't turn on because the BMS don't comunicate with the EC

I tried injecting the positive from the first cell on the positive of the board and the negative from the last cell on the negative of the board, and connected to the rog and see if it can charge, but the orange led still starts to blink and that's it.
the charger just give 14.90v to the rog, tried 2 different chargers and it's the same, they just do the handshake to 15v instead of the 20v.
already look the .cat with Boardviewer, idk if its a problem with the ITE, i will buy a new battery and try if shows the same thing i don't really know what to do.

I was looking the battery, it's giving 0v on positive to negative, measured the cells, they have all 3.7v all together have 14.5v but 0v on positive and negative idk of the BMS is on protection mode or something like that

Hi, made the bypass too to test out, and the orange light shows up but after some seconds it starts to blink and don't stop to blink