So changing your BraX3’s IMEI to the IMEI of a device compatible with Verizon network will ensure your BraX3 doesn’t get blocked.
What change of IMEI won’t help is if the telco is using 5G or LTE frequency bands not supported on the phone. BraX3 is compatible with all frequency bands AT&T & T-Mobile uses. But there are some frequency bands Verizon uses which are not supported on the BraX3.
You can see the list of supported frequency bands on the BraX3 via this article.