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Correctly Merlin for TUF Gaming AX5400

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I have TUF Gaming AX5400 H/W Ver. A - FV from ASUS
Is it correctly firmware to my router?
There is big different file size between Asus and Merlin...

ASUS TUF-AX5400 Firmware version
94.46 MB

Merlin download:
48,5 MB
So, will be correct, I can use this FV.
Zrzut ekranu 2023-08-22 173650.png

I consider change FV because Asus firmware after 27 days without restarts has two problems:
- increase uses processors from 3-5% to 30-50% (Permanently in use).
- lost free RAM
All problems I send to Support (log and describe) and described in SMB forums in "ASUS TUF-AX5400 Firmware version".

What is difference between version V1 and V2?

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