The RB won't recognize my SIM

Hello ,
I have Rb411 - and it doesn’t recognize the SIM
it’s said the SIM isn’t inserted .

I have try to do NetInstall , with version 5.7 , 5.18
but still - not good

the modem and the SIM are working (have try them in 3 others RB411)

any help ?

Thanks ,
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you may send the MC8790 an global reset command (helps for this old firmware sometimes):
1.) disable your dialout-interface ppp-out1
2.) open the serial terminal:
/system serial-terminal channel=3 usb2
3.) enter the following chars and press enter
AT!GRESET
4.) exit from serial-terminal and reboot the rb411
5.) enable your ppp-out1

I have try it before I wrote this post
and it didn’t work

something else maybe?

Thanks ,

maybe you need to upgrade your MC8790 firmware to K2_0_7_35AP C:/WS/FW/K2_0_7_35AP/MSM6290/SRC
for me it works with this card.

try to do this
but still get the same problem
I think the problem is in the RB and not in the modem(the modem is working in another RB)