u/Nyxelithias

I recently subscribed to a fizz 5g plan after being with bell and now I'm only getting LTE. My phone is a s20fe 5g SM-G781W and it worked with 5g on bell. I spoke to support but they couldn't help and just transferred me to some higher up technical team. While I wait on that I was wondering if anyone here had some advice. I was considering flashing a SM-G781U1 firmware hoping it was a limitation with the Canadian firmware locking bands but I don't want to risk bricking on a hunch. Thanks for any and all help.