Hi Álvaro,

You should check the UHD version on the x4xx device itself and make sure it 
matches the UHD version on the host OS.
I am guessing the UHD version on the x4xx device is 4.1.0.0 that is why having 
the same version of the host OS works but other versions aren't working.
If the x4xx still have the 4.1.0.0 version, you may consider updating the x4xx 
file system so that both UHD on x4xx and host are the same.

I hope this helps.


Best,
Joshua

Graduate Student,
Department of Electrical and Computer Engineering,
Iowa State University,
Ames, IA.
________________________________
From: [email protected] <[email protected]>
Sent: Sunday, March 2, 2025 9:16:19 AM
To: [email protected] <[email protected]>
Subject: [USRP-users] Issue Upgrading UHD from 4.1 to 4.8 : [Error][MPDM] MPM 
major compat number missmatch


Hi!

We were working with UHD 4.1 and Ubuntu 22, but we wanted to upgrade the 
version to the 4.8. However, we keep encountering this error all the time and 
are unsure why.

The new version does not allow to use commands that previously worked. This 
force us to downgrade the uhd version to 4.1. We also tried 4.5, but the same 
problem.

If anyone can help us troubleshoot this problem, I would really appreciate it!

Best regards,
Álvaro

[cid:[email protected]]
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