Thinkpads Forum

Posted: **Fri May 16, 2014 10:53 am**

Hello,

I have a W7/Hackintosh dual boot system on my T510. The T510's BIOS was upgraded to 3rd party BIOS with White-list removed for non-Thinkpad Wi-Fi card support. Everything working fine but there's strange behavior of the T510: sometimes, when you reboot OS, after standard ThinkPad BIOS screen machine enters into the BIOS setup by itself AND after that, when you exit Setup, T510's BT module doesn't show up in W7/Mac OS X. The interesting thing is that I'm able to cure BT by booting with Ununtu 13 USB drive. The Ubuntu boot "CD" fixes the non-working BT module while booting. Looks like a miracle? Yes, but unfortunately Ubuntu is unable to fix the 1st part of the problem

Any ideas what's wrong with the BIOS? I'm not sure that this is backup battery. I can't downgrade to original BIOS back either - Mac OS X "ready" Wi-Fi card will not work.

Posted: **Fri May 16, 2014 11:11 am**

It seems rather obvious that you have a faulty BIOS.
Where did you get it from?

You should be able to go back to an older Lenovo BIOS, and then go up again to the newest Lenovo version.
Use a bootable CD rather than BIOS-update in Windows.

Posted: **Fri May 16, 2014 3:32 pm**

Unfortunately I don't remember exactly! Probably the modded BIOS is from here:
http://www.insanelymac.com/forum/topic/ ... 12-update/

Posted: **Fri May 16, 2014 4:31 pm**

Unless you load a Lenovo BIOS (or one from a renowned BIOS-modder), there's nothing much we can do for you here.
This forum does not 'make' modded BIOS versions, try

Code: Select all

http://forums.mydigitallife.info/threads/5866-LENOVO-(IBM)-Bioses-especially-Thinkpad/

Warning: it's a huge thread!

Posted: **Sat May 17, 2014 1:09 am**

Thanks! I'm gonna search this thread -- may be someone made a request on T510 modded bios with wite list removed already. I'll post update.

Posted: **Sun May 18, 2014 5:36 pm**

I found necessary BIOS in mentioned thread:

Code: Select all

http://forums.mydigitallife.info/threads/5866-LENOVO-(IBM)-Bioses-especially-Thinkpad/page611

Code: Select all

WL removed only: Lenovo_T510_6muj31us_6MET92WW_NWL
https://app.box.com/s/da3pwd65a8yq8033amrw

Slic + WL removed: Lenovo_T510_6muj31us_6MET92WW_NWL_LEN21
https://app.box.com/s/e1rm3lz90yw7j3vgrxp8

Look README to update. Please post results.

Then I flashed back original Lenovo, removed Wi-Fi card, flashed Lenovo_T510_6muj31us_6MET92WW_NWL (WL only), installed card back. So far so good - no more entering in the Setup.

Posted: **Mon May 19, 2014 1:51 am**

The problem appeared again if AC adapter and battery are removed. Probably this is the same modded BIOS I flashed earlier or it's a hardware problem (I noticed 'read error' message before ThinkPad BIOS screen once)

Posted: **Sat Jun 14, 2014 11:22 am**

Might as well try replacing the backup battery, in that case.

Posted: **Fri Sep 18, 2015 5:20 pm**

The source of the the problem was (what do you think?) Chameleon boot loader once I changed it with Clover everything is gone.

Thinkpads Forum

T510 reloads into BIOS/BT module problem

T510 reloads into BIOS/BT module problem

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