How to remove the Sim-Lock on "old" Samsung Galaxy S4 Mini?

Hello!

My Question is simple:

How could i remove the Sim-Lock on the Galaxy S4 Mini (i9195) with the NEW Bootloader(with Knox) on it?

... for you to know: i tried a lot of things - flash many many different STOCK & Custom ROM's, many different modems and
try the App "RegionLock Away v1.3" from Chainfire on all flashed Rom's and Modems. The App says it works, but the Simlock
ist still there :(.

I also try to open the Service Mode with *#0011# > Back > Key Input "Q0", go to UMTS>Debug Screen>Phone Control>Network Lock,
to find the entry "PERSO SHA256 OFF", but this entry is not there, only PERSO SHA256 Info is shown. I tried this on all flashed Roms
and with different flashed Modems - not working.

The actual problem is: The "RegionLock Away v1.3" app or the method with the "Service Mode" just works on OLD Stock-Roms, like
Roms with the indication "MDL", "MDE" or "MK2" from the year 2013 (Roms which include "old" modem-files). BUT the fu..... new
bootloader does not allow me to flash an old Rome like the above & its impossible to "downgrade" the new bootloader :(

Now, im asking the professionals here, what could i do? - what are your ideas?

I read about the "NV-RAM" - a place where the IMEI & the Simlock is stored - how can i reach/edit this place? Some people
managed it, to erase this memory (& get a great problem!) other guys create a backup from it and restore a backup/image
from the nvram. Maybe i could replace my nvram-partition with an other partition without simlock?

Please help! & If i find a solution, i will explain it here!

Thanks & kindly regards,
Stephan

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