Lenovo ThinkBook 15 G2 ITL Bios request

[disorder]

hello

i'm driving me mad
i have tried so many times to erase and program those chips, all my tries fail
one time the laptop had booted but ssd not detected in bios
other time boot ok, ssd ok but trackpad only works in bios (i think it is win related) but CPU is hot and fan spinning full speed.
all other tries : blank screen or blinking led

i really need help for this one, for procision it is a flv35 , serial and MTM just above

i'm now sure that my original dumps are corrupted cause i have used a non modified ch341a and sometimes misense offset, now it is modified and got no error on all verification

thank you

[SMDFlea]

hello

i'm driving me mad
i have tried so many times to erase and program those chips, all my tries fail
one time the laptop had booted but ssd not detected in bios
other time boot ok, ssd ok but trackpad only works in bios (i think it is win related) but CPU is hot and fan spinning full speed.
all other tries : blank screen or blinking led

i really need help for this one, for procision it is a flv35 , serial and MTM just above

i'm now sure that my original dumps are corrupted cause i have used a non modified ch341a and sometimes misense offset, now it is modified and got no error on all verification

thank you

Flash both bios, disable VMD in bios settings.

[disorder]

thank you !!!!! all work properly now.
don't understand why cpu was hot with the bios i've made. nevermin this laptop is done !
thanks again master

[JeroenRood]

Hello,
A customer came to me with a Lenovo Thinkbook 15G2 ITL
MTM : 20VE0117MH
SN: MP27G5FA
After some Windows updates it asked for a reboot, and now there is no picture. Powerled flashing very slowly (4 sec on / 4 off).
Maybe Windows tried to update the BIOS. I found version CN46WW(V2.09) in the 128Mbit dump (so the update is not done)
Both dumps included.

If it possible to check if they are corrupted, or generate a new set?
Many thanks in advance.
Jeroen.

[Carlo Verdone]

Hi everyone , i need bios for Lenovo Thinkbook 15 G2 ITL S/N : MP2BG83R MTM : 20VE012FIX MAIN : FLV35 LA-K052P REV. 1.0 . Defect is turn on but after 2/3 seconds shut down , instead the charger of battery work properly . Thanks in advance .

[peste]

Hi everyone , i need bios for Lenovo Thinkbook 15 G2 ITL S/N : MP2BG83R MTM : 20VE012FIX MAIN : FLV35 LA-K052P REV. 1.0 . Defect is turn on but after 2/3 seconds shut down , instead the charger of battery work properly . Thanks in advance .

try post #32..

[Carlo Verdone]

Hi everyone , i tried the bios on the post #32 but it's all the same , push power button circle led on the power button light on for 3/4 second and after stop , the fan no work , but the charge circuit works well , maybe i need another bios or it's a faulty on the board , so i need a boardview o schematic , many thanks .

[peste]

Hi everyone , i tried the bios on the post #32 but it's all the same , push power button circle led on the power button light on for 3/4 second and after stop , the fan no work , but the charge circuit works well , maybe i need another bios or it's a faulty on the board , so i need a boardview o schematic , many thanks .

for schematics move the discussion to the "schematics only..." section

[natnaphat]

Re: No display issue



Virgin BIOS with your DMI, try it.

I don't know if this thread is for "15 G2" or not, I can see "16 G2" in the thread title and a lot of people ask for "15 G2" but the BIOS is different as far as I know!

Thank you Bios work 100%😍

[hardware1]

Thank you Bios work 100%😍

You're welcome.

[davidk35]

just one quick question so i wont do something terribly wrong, is this the main 32mb bios chip? cant read it with a programmer, i can read the other chip just fine but not this one

[SMDFlea]

just one quick question so i wont do something terribly wrong, is this the main 32mb bios chip? cant read it with a programmer, i can read the other chip just fine but not this one

That`s not a bios chip, it`s a mosfet,voltage regulator or something..

[hoaca388]

just one quick question so i wont do something terribly wrong, is this the main 32mb bios chip? cant read it with a programmer, i can read the other chip just fine but not this one

No. this is not a bios chip.

[davidk35]

No. this is not a bios chip.

ok so here is another one:
from my info this one is to small to be a bios chip, but i may be wrong. just to be clear we are talking about 15 G2 ITL. I dont see any other chips unless they are hidden under tape or something.

[davidk35]

ok unless i am doing something terribly wrong. pin 1 and 8 meassure 3,24v, pin 4 out goes to ground. this is for sure not a mosfet

[SMDFlea]

ok so here is another one:
from my info this one is to small to be a bios chip, but i may be wrong. just to be clear we are talking about 15 G2 ITL. I dont see any other chips unless they are hidden under tape or something.

That`s a 1MB firmware chip, not the bios

[davidk35]

That`s a 1MB firmware chip, not the bios

thanks, ok so i found both bios chips near cpu, flashed both 16 and 8mb and no luck.
what happens is, same as before. when i turn laptop on. Nothing, 3 buttons lit up ESC, Caps lock and Num lock, and they stay like that forever, no blinking nothing, no fan, no heat from cpu.
Since it appears not to be a bios error, could that firmware chip be corrupted somehow? or laptop is simply dead(cpu)

[SMDFlea]

thanks, ok so i found both bios chips near cpu, flashed both 16 and 8mb and no luck.
what happens is, same as before. when i turn laptop on. Nothing, 3 buttons lit up ESC, Caps lock and Num lock, and they stay like that forever, no blinking nothing, no fan, no heat from cpu.
Since it appears not to be a bios error, could that firmware chip be corrupted somehow? or laptop is simply dead(cpu)

You can`t assume the CPU is dead. Check the power sequence in the schematic https://www.badcaps.net/forum/troubl...flv35-la-k052p ,if you want more help start a new thread in laptop troubleshooting .