Firmware doesn't update and gateway doesn't detect LoRa card

Hi,

I wanted to upgrade my Gateway from a version 1.2.2 to a version 1.4.3.
I followed the step recommended by Multitech, which is to update first to 1.3.3 to keep the configuration. This step worked fine.
But now that I want to upgrade from 1.3.3 to 1.4.3, the process seems ok, the Gateway restarts but stays in ver. 1.3.3.
Plus, it won’t detect my LoRa card at all anymore.
Does someone have an idea on how to resolve that ? I tried multiple times and even try to downgrade to an older version (1.3.2, 1.4.2 and even 1.3.3 again), Nothing works.
This is not the first Gateway I upgraded from an old version to the 1.4.3, it worked fine before.

Thanks