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mmu with newer firmware than printer  

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Sumta
(@sumta)
Active Member
mmu with newer firmware than printer

does anyone know if there is a major issue with running newer firmware on a older printer.

have a mk3s+ with the newest firmware for it
mmu firmware current is 6.4.0 (3.0.3) , but mmu mk3s+ is 3.14.1

Best Answer by stevo1957:

There is only one firmware file for the MMU3 - version 3.0.3. It doesn't matter which printer firmware file you grab it from so just unzip the version 6.4.0 file and flash the 3.0.3 firmware file to the MMU3.

Posted : 11/02/2026 12:11 am
stevo1957
(@stevo1957)
Estimable Member
RE: mmu with newer firmware than printer

There is only one firmware file for the MMU3 - version 3.0.3. It doesn't matter which printer firmware file you grab it from so just unzip the version 6.4.0 file and flash the 3.0.3 firmware file to the MMU3.

Posted : 11/02/2026 8:29 pm
stevo1957
(@stevo1957)
Estimable Member
RE: mmu with newer firmware than printer

For some reason, I can't edit my post. Don't put any new firmware on your Mk3S+ as you are on the latest version. 6.4.0 is not compatible with the Mk3S+.

Posted : 11/02/2026 8:33 pm
Sumta
(@sumta)
Active Member
Topic starter answered:
RE: mmu with newer firmware than printer

Good to know the mmu3 firmware is still relevant , regardless of printer type.

 

Ty!

Posted : 11/02/2026 8:35 pm
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