For the enthusiast who demands root access, the is your best bet. If that fails and you are comfortable soldering, the UART method (Method 4) is the only guaranteed way to regain control.
Developers on 4pda and XDA-Developers are working on a "semi-unlock" using a modified db_user_cfg.xml that unlocks hidden menus without replacing the whole OS. Zte Zxv10 B866v2 Unlock
grep -i "password" /userconfig/cfg/db_user_cfg.xml Look for a tag like <Value name="Password" rw="RW" value="**[Encrypted]**"/> . Sometimes it is plain text; often it is base64 encoded. For the enthusiast who demands root access, the
cat /userconfig/cfg/db_user_cfg.xml This outputs a massive XML file to your screen. It contains the actual Super Admin password. grep -i "password" /userconfig/cfg/db_user_cfg
Copy the hash to a Base64 decoder (many online tools, or use echo "hash" | base64 -d in Linux). Part 4: Method 2 – The Physical UART Unlock (Hardcore) If the software backdoor is patched (ISP has disabled telnet and CGI exploits), you must go physical. This voids your warranty and requires soldering.
Since the output is too fast to read, copy it to a USB drive or use grep to find the password:
If you have landed on this page searching for the term you are likely tired of restricted admin menus, blocked bridge modes, or the inability to change your DNS or Wi-Fi password. You want full control.