still cant boot anywhere, i did some research and from what they told me at the repair shop it HAS to be a hardware fault.

from what i know about electronics is that something died on the way from/to battery/main power supply.

searched for a bit and i think that the PMIC is dead, because the phone gets some juice from the charger but still needs the battery, and the phone died while it was on a charger(which i think is faulty but didnt bother test it, and now i cant find it), so the PMIC is my best guess.