This device is typically an (Android-based) or an ONT/ONU (Optical Network Terminal) depending on the region/market. The "unlock high quality" phrase usually appears in forums for enabling higher video output resolution, frame rate, audio passthrough, or installing third-party apps to bypass carrier locks.
Unlocking the router's software is only half the battle. The device communicates with the ISP's OLT (Optical Line Terminal) using a GPON Password (SLID/PLOAM) and a GPON Serial Number. Zte Zxv10 B866v2 Unlock High Quality
: Use tools like "Button Mapper" or specific APKs found on community forums (like Telegram groups ) to replace the carrier launcher with a stock one. Option 2: The High-Quality "Permanent" Unlock (Hardware) For a "High Quality" result—meaning a clean Android 12 IPTV set-top box This device is typically an