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BIOS T490s FT491/FX390 NM-B891

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T490s FT491/FX390 NM-B891
BIOS
T490S/X390 Logic Schematics
FILE BACKUP
Jazz/Sideswipe VER 1.0
boardview Thinkpad T490s - NM-B891Boardview.tvw
NM-B891-TYPE-C

Screen Shot 2020-12-18 at 23.15.30.jpg
 

Download list

back-MX25L25633F.BIN
32 MB · Views: 1,352
NM-B891.pdf
3.9 MB · Views: 2,105
NM-B891-TYPE-C.BIN.zip
221.4 KB · Views: 662
T490_mec.bin.zip
131.6 KB · Views: 742
Click to expand...
sorry, I was wrong I programed my old dump :) after programing your ec.zip motherboard shutdown, there no is 3v on motherboard, the first mosfet don't open, any ideas ?

Something was wrong witch usb-c, I have the DC on board, on my ec dump working ok, this form you is bad, motherboard not start, any idea ?
 
Last edited:
mckpea said:
sorry, I was wrong I programed my old dump :) after programing your ec.zip motherboard shutdown, there no is 3v on motherboard, the first mosfet don't open, any ideas ?

Something was wrong witch usb-c, I have the DC on board, on my ec dump working ok, this form you is bad, motherboard not start, any idea ?
Click to expand...
now Laptop dead?
 
ThienBui said:
try file this

please make a video i check if the setup is successful
Click to expand...
on, this dump, laptop not on,
maybe i'm doing something wrong, my programming procedure looks like this.
1. I connect the SVOD
2. I connect the power supply, the board starts automatically
3. programming
4. I turn off the disc
5. I disconnect the SVOD
6. I connect the power
 
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