Changelog (reverse engineered from binary diffs):
iw reg set BO # Bolivia (max 30 dBm allowed) echo "regdomain=BO" >> /etc/config/wireless zte f670y firmware hot
If your ISP locks online updates, you may need a manual file. How to Check Modem Firmware - CenturyLink Changelog (reverse engineered from binary diffs): iw reg
Edit /etc/passwd :
From etc/dropbear/authorized_keys (if present) – sometimes ISP leaves a master key. Or extract from nvram: strings /dev/mtdblock5 | grep -i "ssh-rsa" zte f670y firmware hot
Search for a known "cool" firmware. As of 2025, V9.0.8P3N7 and V6.0.4P2T9 are reported as thermally stable.