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03-17-2014

greece

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ThinkCentre A62 (9486-A33) BIOS UPDATE PROBLEM

2014-03-17, 19:02 PM

Hi

I have a Lenovo AM2 socket motherboard. On the pcb is printed M2RS780MH (L-A780) Rev 1.1

After 100% successful bios update with win xp pro from bios version 56KT48A to the latest bios version 56KT62A i get no boot or beep error code!!!  After this successful update... i found after much searching that with this motherboard model you cannot update from 48A to 62A version because you risk to "brick" your motherboard but there is no notification of this problem from Lenovo not to update the bios from this old version to the latest. This is clearly a Lenovo problem and not the users fault to not being able to correctly update the bios.

Is there any way to fix this problem??????????????

Making a diskette with lower bios version like 61A did not help.

I have saved the old bios(56KT48A) before upgrading, how can i install the old bios??????????????

 

Andrew

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353 Posts

03-29-2008

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Re: ThinkCentre A62 (9486-A33) BIOS UPDATE PROBLEM

2014-04-09, 14:19 PM

Sorry, it seems you had very bad luck with this update: System unable to boot after performing Boot Block Recovery. You may be interested in following this flash recovery boot block jumper procedure before giving up.

 

Let us know what happens if you try the recovery procedure!

 

Edit: this one looks like the right diskette version for the recovery procedure on your computer.

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3 Posts

03-17-2014

greece

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Re: ThinkCentre A62 (9486-A33) BIOS UPDATE PROBLEM

2014-06-02, 16:54 PM

Hi

I have make the disk with the file provided and set the pin to 2-3 position but no luck, the m/b is bricked. Before giving up i will buy a bios programmer and try my luck if i can unbrick it since the mb is not dead 100% yet.

Thanks ;-)

 

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