Dead K750i

[Boki92]

My 2 year old K750i has died silently. I took it to 3 diffrent services, all of them said it cannot be repaired, so I bought same phone with smashed display for 10$. I took out and replaced my phones PCB with one I took form the phone with smahed display. When I put everything back together, It wouldn't turn on. I plugged it into the charger, and led lit up in red while phone is plugged and charging. I decided to connect phone to the XS++, and I found out that software was messed up, so I did a reflash, but It won't turn on again, led lights up when i plug the charger in and that's all. Does enyone know what should I do?

[mohdumer]

Update Your EROM. REPAIRING EROM GUIDES for most sonyericsson phones - Top Sony Forums

[LUIZZZ]

SUPER FULL FLASH!!! erom main fs custom all things

[Boki92]

Update Your EROM. REPAIRING EROM GUIDES for most sonyericsson phones - Top Sony Forums

I will try that tomorrow. I still have few questions.

What about GDFS? And if the red light blinks, and phone connects to the computer, does that mean that it's working with hardware? To put it simply, is new PCB working?

[TechSE]

Dont do anything to GDFS.
As it is now different phone with its own GDFS.

You just connect the phone with machine and identify it to SEtool or XS++ and note the firmware, CID, FS , erom versions and then try to arrange the valid versions and flash. Dont do anything in haste as this time it will be either you get one phone working or God forbid two phones dead. Good Luck.. Please charge your phone battery to full status before flashing this phone.