Hi guys, does anyone have U15 ROM dump? This whacked P51 here seems to turn on the backlight when it powers on but no image, will also most of the time turn it self back on when shut down. Reacts properly to connected charger with blinks on the power button and auto startup and restart on CMOS clearing. I am guessing the GPU N17P Q3 A1 is not starting. The cpu is Xeon E3-1535M v6.
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Hi, the SIO firmware flash in my lenovo P720 seems to be corrupted, after a reboot POST fails with CPU1 fan failure and all fans set to max, proceeding with booting shows SIO FW no response.
I've tried using the lenovo sio update utility but that fails with "EC Autho Value not Match" when the system reboots for the update. The efi update tools has a S04FW.cap file but it's 256kb which seems too small?
S/N S4PD6489... -
Hello,
I am trying to repair a Dahua NVR4216-4KS2 that is not booting.
The main BIOS/firmware is stored in an SPI flash EEPROM (Winbond 25Q128, labeled as U130 on the PCB).
I have a CH341A programmer and I already attempted the following steps:- Identified the correct chip (W25Q128, 3.3V SPI flash).
- Tried to read the contents with CH341A Programmer software. The dump seems corrupted and I often get the error: “Chip with the contents are in disagreement.”
- Compared several chip type selections (24Cxx and 25Qxx families) to confirm it is indeed a 25 series SPI
08-19-2025, 09:23 AM -
Hi everyone,
I’m looking for a 2 MB BIOS dump for a Lenovo IdeaPad 5 16ARH7H / Legion 5 with mainboard NM-E471 Rev. 2.0.
The BIOS chip is a Winbond W25Q16FW (1.8V, 2MB) and it's completely unresponsive / bricked. I tried recovery via USB but no success. Now I want to reflash it externally using a CH341A programmer.
I already found 32MB dumps (e.g. from Vinafix and Badcaps), but they are too large for the chip – and the last 2MB in those files are just FF FF FF....
✅ What I need:- A working 2MB BIOS dump
- Matching NM-E471 Rev. 2.0, e.g. JY575
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Hello everyone.
I have L460 Type 20FV (2 X 8MB bios chips) with no boot issue after BIOS update (black screen with restarts, common issue on this model + BIOS update).
BIOS dump(s) from this post https://www.badcaps.net/forum/showpo...7&postcount=27 makes the laptop boot absolutely fine, no delays, etc..
But there is an exclamation mark in the device manager for the LAN card right after fresh OS installation - LAN naturally doesn't work. I saw requests like "BIOS: fix LAN" on other sites.
Could someone point on a direction... -
Hello!
A few days ago I bricked my Lenovo x1 nano gen 1 while updating the bios/fw from linux.
No the machine power up, but it stuck in a recovery state and I can not do much.
Lenovo X1 Nano Gen 1
Type: 20UN - X021US
S/N: R9 - 10W2D9
I would like to flash a new BIOS/FW on the chip using a CH341a programmer but ... I actually don't know which "chip" on the motherboard to target 🤦♂️
So here I am to ask for help.
I opened the laptop and I found a chip that may be the target, on it I've:
Winbond 25R256...
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