Systems and methods are provided for managing updates to user devices, and in particular, SIM-based OTA updates. In some cases, SIMOTA updates need to be made while a user device has a cellular connection (e.g., 4G/LTE, 5G). As such, an instruction is transmitted to the user devices that need a SIM-based update but that currently have a non-cellular connection. The instruction is for the user devices to deregister from the non-cellular connection and to reregister using a cellular connection. An indication is received that at least a portion of those user devices now currently have a cellular connection. The SIM-based updates are then transmitted to those user devices.