EM7455, Deactivate Low-Power-Mode

Hi Guys,
I was trying this engineering mode for my EM7355 and it worked. My aim is to write the SAR BACKOFF settings permanently into the modem. Unfortunately even when I did the settings in eng. mode they were reverted to initial condition after changing the SIM and having the FW autoswitched to the carrier specific version.
Can you please help me how to do it steadily?
I also tried to apply the SARBACKOFF settings via the configuration.ini file, but that way they were not even set just once.
B4316 driver pack and windows 10 is used. Generic FW is 05.05.58.00. In the driver pack there is Verizon, ATT, Rogers, Sprint, Bell, Telus defined with their FW/nvu.
Thanks