Help| No SIM card | Emergency calls only|sm-g920f

I have really made a mess trying to fix it myself.
I will write the current status and at the bottom what I've tried so you can skip

Model: sm-g920f
IMEI: 359845066450254
sn:RF8G41WR1SW
Android version:6.0.1
build #: XtreStoLite Deo Mod v.3.3 - DPDP
Baseband:G920FXXU3DPDP
Kernel version: 3.10.61-7884513 dpi@SWDD6508#1
22 Apr KST 2016

now the sim card works in other phones and when I remove it the device registers it is SIM CARD REMOVED but when I put it back in nothing happpens, and mobile networks settings is gone

Quote:

*I started in stock 5.1.1 (MADE NANDROID BACKUP OF EVERYTHING INCLUDING EFS) and flashed twrp via odin > (everything still working) *flashed XtreStoLite 2.4 (5.1.1) via twrp > (everything still working) after several months *flashed new 6.0.1 bootloader and modem via odin and tried to flash XtreStoLite 3.0 (6.0.1) via twrp > got stuck in bootloop... *used smart switch to go back to stock 6.0.1> Everthing was OK until about a month later the phone suddenly restarted and doesn't recognize the sim card * I tried factory reset * I tried samsung but they gave it back saying I've tripped my knox flag *I flashed 6.0.1 XtreStoLite bootloader, modem and TWRP again via odin *I flashed XteStoLite 3.3.1 (6.0.1) *I tried restoring from the first nandroid (stock 5.1.1 from the begining) and got stuck in bootloop again. *reflashed XtreStoLite 3.3.1 (6.0.1) and tried restoring only the efs. still doesn't work.

I saw some threads talking about octoplus box but I still have my efs Backed up my and SN and IMEI still show up.

Please help me I am here I am willing to learn and search online. I've tried everything i've found online.

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