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1 Rookie

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4 Posts

57

May 14th, 2024 03:48

m18 R1, downgrading BIOS from 1.16 to 1.15?

The stupid me just installed the new bios update 1.16 for my M18R1 and now fans are crazy, laptop runs very hot in low workload the fans are constantly at 35% with a very annoying sound like a broken bike that lasts for at least 15 sec and then stops for a little bit maybe 5 sec and start again as a constant annoyance  a game braking bug and I can't downgrade the bios using the old installer for the 1.15 bios version....I just need help really bad.

Community Manager

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54.4K Posts

May 15th, 2024 13:07

Not possible to downgrade. All you can do now is periodically check for a new BIOS to released and install that one to see if it fixes the issue.

Any BIOS update that specifies in the description =

Dell Security Advisories
DSA
security updates

means that once installed, the user cannot downgrade to previously installed BIOS.

1 Rookie

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4 Posts

15-05-2024 19:41 PM

@DELL-Chris M​ Thank you for your response but it should be at least a way to downgrade to fix bios issues it's a software after all,
and if I'm going to wait for a new bios update when is than going to happen?
and will it fix the forced 35% fan speed for 15sec or not
and I can't control fans curves in the AWCC freely without the constant 35%/15s even when the CPU is cool.
is there a way to control the fans from the bios to stop this annoying sound? 

6 Professor

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6.1K Posts

May 14th, 2024 21:19

Hi @DELL-Cares  @Dell-Brad L  @DELL-Chris M  can Dell Technical Support assist user @DedRiver22 and downgrade their M18 R1 BIOS v1.16 to an earlier version that works, or fix BIOS v1.16?

Not sure if this user's m18 R1 (1/20/2023) Support Services are enabled.

Thank you in anticipation. 

(edited)

1 Rookie

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4 Posts

May 14th, 2024 21:42

Hi @DedRiver22​ try installing BIOS v1.16 again to refresh installation just in case the earlier installation was somehow corrupted. Battery charge must be more than 15% and laptop must be powered by ac adapter. 

(edited)

6 Professor

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6.1K Posts

15-05-2024 20:15 PM

Hi @DedRiver22​ try installing BIOS v1.16 again to refresh installation just in case the earlier installation was somehow corrupted. Battery charge must be more that 15% and laptop must be powered by ac adapter. 


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