Help nm-d281 rev1.0 LEGION 5 15ARH05H bios

[hoaca388]

Sorry, doesnt work, CPU regained the VCCCORE and APU warms up now, but still no image.
power LED changed from white to yellow colour. (feature ?)
side LED still blinking white.

Any chance for different bios ?

Thanks!

No. https://www.badcaps.net/forum/troubl...mobile-devices

[Jari Savolainen]

Hi,

Lenovo Legion 5 15ARH05H won't start. Power button led is on and of about 10s frequency. Nothing more happens.

S/N:PF251ELJ MTM: 82B1005VMX

Tried to start by removing devices one by one but no help. No visible physical damages found in pcb:s. Bios battery voltage is only about 2,4V but I suppose it is not causing problems. I bought CH341A programmer and received it recently. Attached original BIOS dump done with NeoProgrammer V2.2.0.10. I tried also most bios.bins found in this thread without success. I didn't make any DMI or other modifications just uploaded them to bios chip and tried to start pc - wrong?

"You just need to copy the DMI from your backup to that one using a hex editor,with these offsets 75C000 - 75DFFF"

Does this mean I just need to replace this section from original to new bios? Or go through this guide
https://www.badcaps.net/forum/troubl...pt#post1214739

I also tried to extract bios from lenovo bios update pack downloaded from Lenovo support site. I used this guide
https://www.badcaps.net/forum/troubl...k-bios?t=80861
Bios was packed 7zip instead of TDK packer but 7-zip extracted it. But the length of removed section from the beginning was much bigger than in guide if new bios will need to start with same values than original bios. I suppose it need to start. End offset was told to be 7FFFFF so I removed rest. Then just reprobrammed bios with this file. No success :-)

Could you gurus tell newbie what I'm doing wrong or/and deliver be working bios file. I just don't want to throw laptop to recycle bin yet :-)

[peste]

Hi,

Lenovo Legion 5 15ARH05H won't start. Power button led is on and of about 10s frequency. Nothing more happens.

S/N:PF251ELJ MTM: 82B1005VMX

Tried to start by removing devices one by one but no help. No visible physical damages found in pcb:s. Bios battery voltage is only about 2,4V but I suppose it is not causing problems. I bought CH341A programmer and received it recently. Attached original BIOS dump done with NeoProgrammer V2.2.0.10. I tried also most bios.bins found in this thread without success. I didn't make any DMI or other modifications just uploaded them to bios chip and tried to start pc - wrong?

"You just need to copy the DMI from your backup to that one using a hex editor,with these offsets 75C000 - 75DFFF"

Does this mean I just need to replace this section from original to new bios? Or go through this guide
https://www.badcaps.net/forum/troubl...pt#post1214739

I also tried to extract bios from lenovo bios update pack downloaded from Lenovo support site. I used this guide
https://www.badcaps.net/forum/troubl...k-bios?t=80861
Bios was packed 7zip instead of TDK packer but 7-zip extracted it. But the length of removed section from the beginning was much bigger than in guide if new bios will need to start with same values than original bios. I suppose it need to start. End offset was told to be 7FFFFF so I removed rest. Then just reprobrammed bios with this file. No success :-)

Could you gurus tell newbie what I'm doing wrong or/and deliver be working bios file. I just don't want to throw laptop to recycle bin yet :-)

try popst #17..

[Jari Savolainen]

Thanks. Tried #17 file FSCN28WW.bin. I tried earlier without modifying - not worked. Now modified bin by copying DMI section 75C000 - 75DFFF according post #32. Still not working - powerlight flash 10 s frequency and no more. Any ideas?

[Luke Anders]

Hi everyone,

I'm looking for a specific BIOS for my Lenovo Legion 15ARH05H. Here's the specs/details:

Machine: Lenovo Legion 15ARH05H (Type: 82GU)
Serial Number: PF19KUUH
Board Model Number: NM-D281 Rev 1.0

I seem to have the same problem as Jari Savolainen - every file I've tried so far leads to the laptop turning on, and then shutting down after 10s. I've attached the original file to this post, I was wondering if someone could help with making a file for my specific BIOS?

Jari Savolainen if you've found a solution for this, please do let me know in the meantime!

Thanks!

[hoaca388]

Hi everyone,

I'm looking for a specific BIOS for my Lenovo Legion 15ARH05H. Here's the specs/details:

Machine: Lenovo Legion 15ARH05H (Type: 82GU)
Serial Number: PF19KUUH
Board Model Number: NM-D281 Rev 1.0

I seem to have the same problem as Jari Savolainen - every file I've tried so far leads to the laptop turning on, and then shutting down after 10s. I've attached the original file to this post, I was wondering if someone could help with making a file for my specific BIOS?

Jari Savolainen if you've found a solution for this, please do let me know in the meantime!

Thanks!

Your DMI's corrupted.

[Jari Savolainen]

Hi,

I tried both files from post #17 from this thread as they are. And tried both by copying section 75C000 - 75DFFF from my original bios dump to them. No help. Does it mean I have something other wrong than bios? Or I too having DMI corrupted? Attached my latest bios trial. My original is in post #42

[hoaca388]

Hi,

I tried both files from post #17 from this thread as they are. And tried both by copying section 75C000 - 75DFFF from my original bios dump to them. No help. Does it mean I have something other wrong than bios? Or I too having DMI corrupted? Attached my latest bios trial. My original is in post #42

Serial number ?

[Jari Savolainen]

Serial number ?

S/N:PF251ELJ MTM: 82B1005VMX

[hoaca388]

S/N:PF251ELJ MTM: 82B1005VMX

Legion 5-15ARH05H Laptop (Lenovo) - Type 82B1

[Jari Savolainen]

Legion 5-15ARH05H Laptop (Lenovo) - Type 82B1

Thanks :-) . Tried bios #50 but unfortunately not better result. Still slowly blinking power led only wake up sign. Perhaps there is some other problem....

[Luke Anders]

Thanks :-) . Tried bios #50 but unfortunately not better result. Still slowly blinking power led only wake up sign. Perhaps there is some other problem....

I've got the same problem, even after flashing the DMI fixed BIOS. I've tried reflowing the SoC, no difference. I believe the problem has to do with the EC Chip, but I'm not sure. Let me know if you come up with anything, perhaps we can discuss this further via DMs too.

[Jari Savolainen]

Jep I will tell if I'll find anything. Just now no ideas. Nothing look bad in pcb:s but unfortunately I don't have much electronics fixing skills. And new/used mainboards are simply too pricy in ebay/aliexpress...

[beast4ever]

File Repair
Power is on but no data
All voltages are present, friends
lenovo legion 5 15arh05h
sn-pf2g76ds
mtm-82b10051us
factory id-jvhfc1

[peste]

File Repair
Power is on but no data
All voltages are present, friends
lenovo legion 5 15arh05h
sn-pf2g76ds
mtm-82b10051us
factory id-jvhfc1

bios extracted from Lenovo website update for BIOS Update for Legion 5-15ARH05H, Legion 5-17ARH05H, Legion 5P-15ARH05H
DMI 75C000 - 75DFFF