Forum RSS Feed Follow @ Twitter Follow On Facebook

Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
[-]
Welcome
You have to register before you can post on our site.

Username:


Password:





[-]
Latest Threads
Samsung Chronos NP770 NP870 disable disc...
Last Post: faeterov
Today 08:22 PM
» Replies: 2
» Views: 194
[REQUEST] Lenovo G580 (5ECNxxWW) Whiteli...
Last Post: Dudu2002
Today 05:09 PM
» Replies: 1738
» Views: 744927
[REQUEST] Acer Predator Helios 300 PH315...
Last Post: Dudu2002
Today 02:05 PM
» Replies: 43
» Views: 17923
HP Insyde bios won't see charger, need m...
Last Post: tombodude
Today 12:16 PM
» Replies: 0
» Views: 67
[REQUEST] Acer Aspire V3-772G BIOS Unloc...
Last Post: medtb
Today 11:22 AM
» Replies: 455
» Views: 211415
BIOS Recovery - Dell Latitude 3420
Last Post: MishIndo
Today 06:22 AM
» Replies: 0
» Views: 95
asus rog g513qr bios
Last Post: cic
Today 05:15 AM
» Replies: 0
» Views: 75
Asus PIKE II 3008-8i bios
Last Post: zaku
Today 03:09 AM
» Replies: 0
» Views: 85
[REQUEST] Acer Aspire 4349, 5349 & 5749(...
Last Post: Computer Service
Yesterday 08:16 PM
» Replies: 251
» Views: 131222
HP Pavilion 17-f150nr (no wifi after bio...
Last Post: SSB_017
Yesterday 10:51 AM
» Replies: 0
» Views: 188
A Suggestion
Last Post: marco_otg
04-05-2025 06:40 PM
» Replies: 0
» Views: 138
Bios MOD Lenovo L390/ Wifi support MacOS
Last Post: DennisWeaver
04-03-2025 10:50 PM
» Replies: 1
» Views: 919
[REQUEST] Acer Nitro 5 AN515-54 BIOS Unl...
Last Post: help_seeker
04-03-2025 01:23 PM
» Replies: 129
» Views: 54295
[REQUEST] Lenovo ThinkCentre M93p Tiny (...
Last Post: sairos
04-03-2025 10:23 AM
» Replies: 60
» Views: 47235
[REQUEST] Lenovo Thinkpad T440p (GLETxxW...
Last Post: uncle_Fedya
04-02-2025 03:54 PM
» Replies: 524
» Views: 222938
[REQUEST] Lenovo T440(S) (GJETxxWW) Whit...
Last Post: Dudu2002
04-02-2025 01:56 PM
» Replies: 497
» Views: 208563
[REQUEST] Gigabyte G5 KF BIOS unlock
Last Post: Dudu2002
04-02-2025 01:55 PM
» Replies: 3
» Views: 580
[REQUEST] Lenovo Legion 5 (EFCNxxWW) BIO...
Last Post: Dudu2002
04-02-2025 03:32 AM
» Replies: 44
» Views: 21361
Gigabyte b650e aorus master F33b
Last Post: Anem
04-01-2025 11:59 PM
» Replies: 0
» Views: 366
Xeon E5 2699 V3 (turbo Unlock) for Bios-...
Last Post: xlr8r
04-01-2025 11:42 AM
» Replies: 0
» Views: 482

[Solved] Bios Mod Thinkpad X250 - Disable 0251 CMOS Error
#1
Hello everyone!

I have a Thinkpad X250 with a modded BIOS including advanced BIOS menu and CFG bit unlocked. It is running macOS Monterey and everything works (almost) perfectly, there is a strange problem with Hibernation which I can't figure where it comes from.

The thing is when I put the laptop into Hibernation, it shuts down well and resume perfectly when I turn it on again, but on the next boot it throws me this error "0251: System CMOS Checksum bad - Default configuration used". I've litteraly tried everything on macOS/OpenCore side with HibernationFixup, RTCMemoryFixup, by targetting the RTC offsets which shouldn't be written but it seem that it doesn't changes anything. The problem is not present with Linux/Windows and macOS when I use Standby S3 sleep.

So my new idea is to see if it is possible to mod the BIOS to disable warnings related to this CMOS error, the UEFI module in question is named "DxeCmosInit".

Does anyone has any idea how to do this? The BIOS file is attached to this post. Or alternatively do you think it's possible to just remove the DxeCmosInit module from the BIOS, will it work?

Thanks a lot!
find
quote
#2
An update to say that the problem is SOLVED!

The fix was easy, I just removed the "DxeCmosInit" module from the UEFI Bios with UEFITool, then flashed back the modded Bios (with CH341A programmer), no more CMOS checksum check/error on boot (winning few seconds).

Regards
find
quote


Forum Jump:


Users browsing this thread: 1 Guest(s)