Hello,
I have desoldered the 25R256JWEQ and read it with CH341.
Can someone check it?
I have desoldered the 25R256JWEQ and read it with CH341.
Can someone check it?
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Mọi khoản quyên góp cho badcaps đều được hoan nghênh, hãy nhấp vào liên kết này để quyên góp. Cảm ơn tất cả những người ủng hộ----------------------------------------------------------------------------------------------------------------------------------------------------------------Comment
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Mọi khoản quyên góp cho badcaps đều được hoan nghênh, hãy nhấp vào liên kết này để quyên góp. Cảm ơn tất cả những người ủng hộ----------------------------------------------------------------------------------------------------------------------------------------------------------------Comment
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Hi Hoaca388,
I have checked the soldering of 25R256JWEQ and it seems to be ok.
What should I do with W25Q128JNSQ ?
Should I leave the original BIOS inside?
With the original BIOS the pc would not boot and would not charge.
When I used the OF_W25Q128JW1.8V@SOIC8.BIN BIOS from Alegoff, the laptop could charge and it could power on but the ESC,F1, F4 lights were blinking.
Afterwards, I tried to flash other BIOS dumps to the same chip and from that point on, the Laptop could not be charged.
Even if I dump OF_W25Q128JW1.8V@SOIC8.BIN again, there is no charging light.
(Till now I have not desoldered the W25Q128JNSQ since I can read and write to the chip with the SOIC8 clip).
As a reminder, the first time this issue happened was because of a failed BIOS update from Lenovo as described in the first post.
How should I proceed?Comment
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Mọi khoản quyên góp cho badcaps đều được hoan nghênh, hãy nhấp vào liên kết này để quyên góp. Cảm ơn tất cả những người ủng hộ----------------------------------------------------------------------------------------------------------------------------------------------------------------Comment
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Mọi khoản quyên góp cho badcaps đều được hoan nghênh, hãy nhấp vào liên kết này để quyên góp. Cảm ơn tất cả những người ủng hộ----------------------------------------------------------------------------------------------------------------------------------------------------------------Comment
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Mọi khoản quyên góp cho badcaps đều được hoan nghênh, hãy nhấp vào liên kết này để quyên góp. Cảm ơn tất cả những người ủng hộ----------------------------------------------------------------------------------------------------------------------------------------------------------------Comment
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Thinkpad l13 Gen 4\
Model: 21FQ-S2CB00
SN: PW-09A16X
Type C detect 5v but can't open 19v
I TRY https://www.badcaps.net/forum/troubl...4-bios-request BUT NOTTHING..Comment
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Hi everyone, hope everyone's having a great day.
I have a Lenovo Thinkpad X1 Yoga Gen 3 for repair. (20LES3T900)
I looked in every corner and the laptop seems fine. Its pulling 500mA but no display, no noise, nothing.
So I assume its a BIOS issue. I downloaded the BIOS with CH341A and opened it on ME Analyser and didn't receive any errors.
Does this mean the BIOS is fine? making it a hardware issue?
I downloaded fresh BIIOS from the Lenovo site and used Hex Editor replace the Lenovo's BIOS into my BIOS region. But the file size ended up being... -
Info for error 2202 LenovoThinkPad models and type
Extract from ThinkPad Maintenance Utilities Configuration File
plnsrv.ini Version 1.01
Some information that may be useful
There must also be missing models, add them to the list if you know of any.
...Code:brand name 20B1=ThinkPad Edge E445 20B2=ThinkPad Edge E545 20BC=ThinkPad Edge E145 20BM=ThinkPad X140e 20BL=ThinkPad X140e 20A3=ThinkPad X230s 20AH=ThinkPad X230s 20AK=ThinkPad X240s 20AJ=ThinkPad X240s
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I've currently got a Lenovo Yoga Slim 7 14APU8 that is not posting. Its fan spins, the keyboard lights up, and the caps lock doesn't work. It was taken to some shop for cleaning, and then they updated or tried to update the bios. After that, there was no display and no post. I've removed the bios ic from the board and made a bios dump. I need some assistance going forward, as I suspect this is probably just a bad bios issue. I've tried searching for a dump, but no luck; if anyone can throw me a bone, it would be much appreciated!
Attached is the bios dump in the state I received it... -
Hi!
Went dumpster-diving and found a bricked Lenovo P14S in trash, few weeks earlier. Symptoms - no screen, no POST, no beep, just keyboard LEDs flashing on powerup. Mute button+LED was responding though, and the display self-test was still working (via the key combo Ctrl+Fn+Power held for some seconds, see the Service manual).
Incidentally, Windows 11 have recently started auto-flashing computer BIOS in our region. Even more suspiciously, Lenovo has released a BIOS update just few days before the PC was trashed. About a week later, the BIOS update image has been oficially marked...04-14-2025, 01:56 PM -
Hi, my laptop wont boot at all
With original bios no POST, only LED lights
With alternative BIOS from model TP500LN (flashed via programmer) the notebook works again
Some issues
A- with bios from 500LN, it won't update from bios of model 500LA (from 500LN v203 to 500LA v300)
B- If updated from 500LN version 203 to 300, the battery stops being recognized
Things I tried
1- Update / clear ME: Took the non working bios, made a backup, and did this: https://www.badcaps.net/forum/troubl...theory/trouble...
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