[Q] HELP - After 4.4.2 (n900w8) SIM Card services dont work topic

I installed the new 4.4.2 update from mexico using a canadian CSC in odin on my note 3 Canadian model. But now I cannot access any SIM services or networks, when i try to make phone calls I get the popup "Please insert a sim card". Does anyone have any advice?

I tried to downgrade but I got the check fail: fused 2 binary: 1 error.

Do I have to go to Bell Mobility and ask for a new SIM card?