Hi,

The WLCSP (BGA) chip solder pads are not getting solder balls on them, I soldered thin insulated wire to the pads on the motherboard and now trying to attach a normal 208mil SPI BIOS chip to the wire, some advice on my terminations. I have tried but the machine doesn't turn on, though 3.3v is present at PP3V3_SUS.

Regards.

Hi, i recently come across the same issue and i ended up in ordering the same chip
after a few attempt and comparing the pin out, i was using the same pin assignment as yours at first and realised that i was wrong when i followed the schematic; this worked when i tried to get the new purchased chip recognized by my programmer
pin 19 should connect to pin 5 and
pin 16 should connect to pin 2,
give it a try and let me know, i'm currently still stuck with a proper dump since the original chip is faulty and i couldn't find any working dump on the net

Hi.
BGA SPI chips are simply flipchip and mirrored versions.
I resolved troble with dead uefi chip by changing to simple SOIC8.

The first pin of SOIC8 corresponds to highest pin number of BGA.
I have a dump of 244 MLB, but ME is dirty.

This is my solution:

Не поделитесь дампом от этой модели. Есть такой же не вкл. Был в сервисе где то уже. Хотел попробовать прошить его для проверки.
zokir0609@yandex.ru