Hello,
These changes have been announced within the forums first, found here: Implementation of Read-Only System Files and Mobile and I/O POST/GET Service Removal with RutOS 7.14
Then in the Product change notifications: RUT956 Product Change Notifications - Teltonika Networks Wiki
Then in the changelogs of the firmware (any device): RUT956 Firmware Downloads - Teltonika Networks Wiki
Kind regards,
M.