Warning! GPS Data not available. Clock not Synchronized

Hi there,

I’m managing a small fleet of vans, we have 80% covered with FM1100

They we’re purchased in batches, 2-3 devices over the years.

Different revisions, firmware versions.

At the beginning of 2025 5 of them stopped working, sending lat 0 long 0

getgps:
Warning! GPS Data not available. Clock not Synchronized.

getinfo:
GPS:3 SAT:0

getweektime:
is off by 2-3 days

get/set param 1008 for NTP on some FM1100 manuals:
Warning! Not supported Param ID detected:

So out of the blue, these 5 devices failed during the same time range

How the fm1100 gets the time?
NTP? how to set it?
Network operator fault? NTP protocol blocked? NTP address not reachable? It gets the carrier time?
Param not supported on my firmware version? Or param has a different KEY? Can i update over the air? Cars are in roaming at the moment and i don’t have access to them?
Code Ver:01.07.30 Rev:1 Device IMEI:xxxx Device ID:000006 Bootloader Ver:01.09 Modem APP Ver:TM11Q_R_01.03.05.01_002
Where i can download a suitable firmware? I will keep the current settings?

Tried cpureset, disconnect the car battery by driver for 5-10 mins, no luck.

Please, i need some guidance, to troubleshoot/fix the issue.

Thank you very much

The Topic is already opened here: No GPS signal from 01.01.2025 - #25 by David