The story in short: I have a laptop which got bricked with a failed BIOS update, and it's ENE KB9012QF A3 KBC's embedded flash contents needs to be reflashed.
Solutions I tried, but didn't work:
Using flashrom software with Rayer_SPI parallel port programmer - it doesn't even detect KB9012's internal flash.
Using flashrom with a motherboard's DIP8 BIOS socket after hot-swapping it's original chip to KBC's debug wires - flashrom is able to detect KB9012, but read / erase / write fails because of ICH7's SPI frequency is 17.86MHz, and KB9012's maximum is 16MHz.
Using SPIPGM parallel port programmer which is designed for SPI BIOS EEPROMs - it doesn't detect KBC because of different commands used by KB9012 and regular BIOS chips.
After a bit googling, I found some russian parallel port programmer softwares.
Postal2 - It has KB9012 support, but it can't be used with debug pins directly connected to LPT port, needs external hardware.
UniProf - It's originally designed for reflashing AVRs with SPI protocol, supports connecting directly to LPT port, but not reflashing KB9012.
My question is how to reflash KB9012 with the hardwares currently I have?