If your apps aren't loading or video is buffering constantly: Switch to Ethernet:
: Use the remote (or a USB keyboard) to select Wipe data/factory reset . 3. The Firmware Flash (The "Deep" Fix)
ZTE ZXV10 B820CA15 is a reliable 4K Android TV box, but like any smart device, it can occasionally hit a snag—whether it’s a frozen screen, a stubborn boot loop, or just a sluggish interface.