Yes, with AT command.
I follow related topic.
I call provider support.
I have a problem with TCP server Connection. There’s some topics reporting this works with previous version. so I try to downgrade from version 5.5.25 to 5.5.23. This operation hangs the modem, the format of the flash have changed. There is probably a another problem before the downgrade, because another modem with version 5.5.25 is all OK.