MC8790V losing configuration occasionally


We several bus on-board PCs with MC8790V module installed in them. Been working for several years but some of them randomly lose their configuration switching from AutoConnect to manual connect mode for cellular connection. I guess there must be newer firmware or driver versions compatible with this module solving this issue but I haven’t been able to find any download links among the website sources. Where can I download any of those from?

Here are the driver & firmware versions installed:
Sierra Wireless Watcher R3.1.0.34 Build 2258
Hardware revision 1.0
Firmware K1_1_1_9ap