Module EG25-G GB Firmware

Good afternoon, I have several EG25-G GB modules on hand.
Where can I download the latest firmware for this module?
GNSS is faulty on one of the modules, is there a way to check if this is the case, or fix it with firmware?

I have sent it to your email, please check

Thank you received, GNSS does not work for some modules, is there software for a more accurate check, what is the reason?

In what way? No location output or failed to start?

No location output, does not find coordinates.

Is that so when you test in the open air ?

Can both devices register with the network normally? Did you try to cross the antennas of the two devices?

Did you try to update the firmware? Still not recovered?

How many devices are out of order so far? Just one?