You usually need a "PAC file" and a tool called BIN Updater . It’s not a one-click iPhone update. It’s a ritual involving USB cables, specific port numbers, and holding your breath for 90 seconds.
If you use a SIM card for voice calls, older firmware may drop calls when switching from 4G to 3G. New updates enable proper VoLTE switching. zlt s10 firmware
Speed Optimization: Updates often refine how the router handles data packets, potentially leading to faster download and upload speeds. You usually need a "PAC file" and a tool called BIN Updater