Upgrade Firmware LTE5398-M904, not band 1 work

Magicszi Posts: 1
edited January 4 in Mobile Broadband
Hi, I updated the modem to version 12 of the LTE module (released by you). It no longer aggregates band 1 with the other bands, nor does it use only band 1 to navigate. I would like to downgrade to version 8, the one previously installed. Can you carry out the procedure remotely? Or can you possibly pass me the file to update manually?

I can no longer work with this modem, I tried to reset but the problem persists.

Model: LTE5398-M904

Installed version: EG18EAPAR01A12M4G

Previously installed version: EG18EAPAR01A08M4G

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