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mcwangus
Paper Tape
Posts: 4
Registered: ‎08-15-2016
Location: HK
Views: 5,358
Message 1 of 14

Rollback BIOS X250 from v1.23

Hello all,

The built-in "Lenovo Update" agent program recommended a BIOS update v1.23 (it's a critical update), so I did. And then my system doesn't boot: it's hangs on the "Starting Windows" logo page (Windows 7 64 bit).

 

So I am trying to rollback to the last working version v1.21. Confirmed that my machine is type 20CL, went here, go the bootable CD, successfully went to the BIOS Update Utility, and then it said: "system program file is not correct for this system"

 

IMG_20160815_170405.jpg

 

The followings settings in BIOS were applied to try enable a rollback of BIOS but failed...

IMG_20160815_170121.jpgIMG_20160815_170139.jpgIMG_20160815_170252.jpg

 

* I am sure: 

- my download was correct

- no issue on handling the ISO burning to CD

- this has nothing to do with Windows or operating system

*

 

Any idea folks?

I really really need my system back...

 

Thanks.

Angus

 

Guru
Posts: 258
Registered: ‎09-04-2012
Location: DE
Views: 5,308
Message 2 of 14

Re: Rollback BIOS X250 from v1.23

As UEFI version 1.23 fixes a severe security issue, a rollback to previous versions requires a hardware flasher. From the readme of UEFI version 1.23: "If the UEFI BIOS has been updated to version 1.23 or higher, it is no longer able to roll back to the version before 1.23 for security improvement"
mcwangus
Paper Tape
Posts: 4
Registered: ‎08-15-2016
Location: HK
Views: 5,280
Message 3 of 14

Re: Rollback BIOS X250 from v1.23

Hello fb1996,

 

Thanks for the message. This clears my doubt why I wasn't able to rollback to BIOS v1.21, this is by-design then, though I am not sure if this is a handling that makes sense: in case of problem after update there should be a way out... "security improvement" is not a very good reason for me...

 

* So this BIOS v1.23 update is a one-way ticket *

 

So problem remains, it's the classic classpnp.sys hangs issue. I cannot rollback BIOS, there is no option to switch to IDE / ATAPI mode. So I am basically stuck. Seems to me the only sure-to-work way would be a system re-install....

 

Any alternatives as you can see folks?

 

My hearty thanks.

Angus

Community SeniorMod
Community SeniorMod
Posts: 3,285
Registered: ‎12-01-2007
Location: US
Views: 5,273
Message 4 of 14

Re: Rollback BIOS X250 from v1.23

Hello,

 

I don't have my ThinkPad X250 in front of me to confirm this, but I'm wondering if there is an option somewhere in the BIOS to enable Legacy or CSM mode instead of pure-UEFI for the firmware type.  Enabling this may allow Windows 7 to boot as it normally would.

 

Regards,

 

Aryeh Goretsky

 



I am a volunteer and neither a Lenovo nor a Microsoft employee.

L380 YogaP50 (20EN-*)S230u (3347-4HU)T23 (2648-LU7)T42 (2378-R4U)T43p (2678-H7U)T61p (6459-CTO)W510 (4318-CTO)W530 (2441-4R3)W530 (2441-4R3)X100e (3508-CTO)X120e (0596-CTO)X220 (4286-CTO)X250 (20CM-*)Yoga 370

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mcwangus
Paper Tape
Posts: 4
Registered: ‎08-15-2016
Location: HK
Views: 5,266
Message 5 of 14

Re: Rollback BIOS X250 from v1.23

Thanks Aryeh

So I tried this:

IMG_20160816_141015.jpg

 

Went to safe mode, stuck at the same place... No luck

 

IMG_20160816_141532.jpg

 

:<

 

Regards,

Angus

Community SeniorMod
Community SeniorMod
Posts: 3,285
Registered: ‎12-01-2007
Location: US
Views: 5,245
Message 6 of 14

Re: Rollback BIOS X250 from v1.23

Hello,

 

Can you try all the permutations of UEFI/Legacy Boot to see if one of those works?

 

Regards,

 

Aryeh Goretsky

 



I am a volunteer and neither a Lenovo nor a Microsoft employee.

L380 YogaP50 (20EN-*)S230u (3347-4HU)T23 (2648-LU7)T42 (2378-R4U)T43p (2678-H7U)T61p (6459-CTO)W510 (4318-CTO)W530 (2441-4R3)W530 (2441-4R3)X100e (3508-CTO)X120e (0596-CTO)X220 (4286-CTO)X250 (20CM-*)Yoga 370

de.gif Deutsche Community es.gif Comunidad en Español ru.gif Русскоязычное Сообщество pt.gif Communidade Portugues
Former Employee
Posts: 1,664
Registered: ‎09-16-2014
Location: US
Views: 5,236
Message 7 of 14

Re: Rollback BIOS X250 from v1.23

T450 and T450s customers have reported similar boot up issues after upgrading to BIOS v1.25. 

 

They identified a workaround: boot into BIOS, tab Security -> Memory Protection  ->  option "Execution Prevention" and disable it. However, please be advised this disables DEP.

 

That discussion can be found here: https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T/T450-Windows-splash-freezes-after-BIOS-u...

 

I have escalated this issue to Think Engineering.

 

Thank you,

mcwangus
Paper Tape
Posts: 4
Registered: ‎08-15-2016
Location: HK
Views: 5,202
Message 8 of 14

Re: Rollback BIOS X250 from v1.23

Really glad for all the support here. This is the most responsive manufacturer forum I have ever experienced Smiley Embarassed

 

@Aryeh Goretsky: tried all permutations of UEFI/Legacy Boot, no luck there

 

@Amy Tupper: unfortunately I did not have chance to try out your suggestion. I moved on to do full system re-installation before noticing your message. I could not afford the down-time so moved on to the tedious but guarantee-to-work way to resolve this. I am now typing on my X250. Wish Lenovo can release a new BIOS version which does enable user to downgrade from there. So fellows like me can first upgrade to say v1.24, then downgrade to v1.21 from there.

 

@fb1996: I am taking your reply as the solution.

 

Thanks guys!

Angus

the-nic
Paper Tape
Posts: 1
Registered: ‎08-18-2016
Location: DE
Views: 5,188
Message 9 of 14

Re: Rollback BIOS X250 from v1.23

I am having the same problem after the BIOS upgrade to v1.23. I can choose the OS in the GRUB bootloader, but as soon as the OS is started (Windows 10 or Linux), the notebook freezes.

 

I will try to disable "Execution Prevention" this evening to see whether it helps..

 

Edit: Disabling "Execution Precention" helped. I really hope this bug is going to be fixed as soon as possible...

twohitsix
Fanfold Paper
Posts: 8
Registered: ‎01-27-2014
Location: HK
Views: 5,135
Message 10 of 14

Re: Rollback BIOS X250 from v1.23

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