Note: Uninstalling system apps via ADB usually only removes them for the current user (user 0), which is safer and reversible by a factory reset.
After the reset, you will need to re-pair the remote by holding the buttons simultaneously when prompted on the screen.
Introduction The ZTE ZXV10 B820CA15 is used by ISPs and end-users for fiber and xDSL/FTTx connections. Failures manifest as loss of WAN sync, frequent reboots, degraded Wi‑Fi, or complete power-up failure. This paper identifies likely causes (firmware corruption, configuration errors, power supply faults, failing capacitors, connector/cable degradation) and presents tested remediation steps. zte zxv10 b820ca15 fix
Test power supply: measure output voltage on adapter and DC jack.
If the box is stuck on the logo, you have to access the "Recovery Menu," which is hidden to prevent accidental tampering. Note: Uninstalling system apps via ADB usually only
If the LOS LED is blinking red, the ONT hardware is likely fine, but the light path is broken.
If your device is frozen or stuck on the boot screen, a hard reset is the most reliable solution. This process clears corrupted system files but will erase all user data. Locate the Reset Button Failures manifest as loss of WAN sync, frequent
the power adapter from the back of the box or the wall outlet.