Sony vaio bios bad flash

[cronogr]

Hello guys, today i was trying to flash my bios with a "chinese bios update for aftermarket battery to work" and after the installer finish the pc stuck i unplugged the power and put it in again, and the laptop is dead no power at all no led's no nothing complete silence.
Anyway to sum it up the situation is like this after bios update

1. No power, no leds no nothing (ac adapter works perfect)
2. The laptop is using a tsop 48 bios chip (Spansion)
3. I short circuit 2 pins of the bios chip with a screwdriver and the computer powers on, but no screen signal, fan is working 3 leds power on
4. the bios brand is phoenix
5. fn+ b fn + esc, etc etc doesn't do anything can't power up this way except if ther is a combination that i don't know for sony vaio's

I will try some usb flash / crisis etc etc if i can't flash it this way i will remove the chip and order a new bios chip preflashed and solder it on the mobo but because the air pump on my soldering station is dead this solution will have to wait

Anyone is able to provide some help or tips ? thanks in advance