Citified FW for multiple mobile operators

IoT Modules
2

It can only have 3 stored image in " at!image?"

That means you need to download
SWIX55C_03.14.10.00
SWIX55C_03.14.10.01
SWIX55C_03.14.10.04

And then switch the firmware in the field by at!impref command

See some example here: