Third-party "Unlock Tool Packs" exist on forums and YouTube to make the device work with other SIM cards, but these carry risks of "bricking" the device. 📝 Review: Vida M4 LTE Router
A note for advanced users: Because the Vida M4 is based on a MediaTek chipset, the official firmware is derived from OpenWRT. For those who are unsatisfied with the official (perhaps it is outdated), you can build a custom OpenWRT image. However, this will void your warranty and requires compiling your own LTE modem drivers (usually for the Quectel EC25 or similar module inside the M4). Only attempt this if you have a UART-to-USB adapter and experience with Linux. vida m4 lte router firmware download
Before downloading anything, check the sticker on the back or bottom of your Vida M4 router. You are looking for: Third-party "Unlock Tool Packs" exist on forums and