Download - Zlt S10g Firmware [upd]
If you need band locking or TTL modification, the download hunt is worth it. If you simply want a secure, supported router, buy a different brand (MikroTik, GL.iNet, or used Huawei). The ZLT S10G is a "project router," not a "set-and-forget" appliance.
Disclaimer: Always verify the source of any firmware download to avoid malware or permanently damaging your device. zlt s10g firmware download