No – always use a wired Ethernet connection to avoid corruption.
Advanced users often ask: Can I install OpenWRT on the ZLT S10?
The short answer: No, for most hardware revisions. The ZLT S10 uses a Mediatek MT7621 chipset, which OpenWRT supports, but the 4G/5G modem (usually Quectel RM500Q or similar) requires proprietary drivers. Without those, you lose cellular connectivity.
However, an alternative exists: Rooted stock firmware (also called “modified firmware”) that unlocks the web interface for AT commands. These are community-made and run on top of the official kernel. Use them at your own risk – they void warranties and may contain telemetry. zlt s10 firmware
Your ISP disabled OTA updates. Download the firmware manually and use web upgrade.
The ZLT S10 is a legacy device. Unless you are experiencing:
...it is generally safer to keep the current firmware to avoid the risk of rendering the device unusable. No – always use a wired Ethernet connection
The ZLT S10 is a high-performance 4G LTE CPE wireless router commonly used for home and small business broadband. Updating the ZLT S10 firmware is critical for maintaining network security, improving data transmission speeds, and unlocking advanced features like band locking or debranding. 4G Indoor CPE ZLT S10 - Broadvision
(and its variants like S10G) is a common 4G LTE Cat4 router used by various global ISPs, including (Sri Lanka) and
(Philippines). Its firmware is typically locked to specific carriers, though modified "openline" versions are popular in the enthusiast community. Firmware Overview & Performance Warning: Avoid random Google Drive or MediaFire links
The standard firmware provides a basic web interface for LTE management. Base Features : Supports standard routing functions like , and basic Carrier Locks : Official firmware often hides advanced settings, such as Band Locking , and restricts use to the original provider's SIM card. Firmware Versions : Notable versions like
have been "debranded" by third parties to unlock these hidden features, enabling manual frequency selection to optimize speed in low-signal areas. Technical Specifications IEASUN ZLT S10/S12 LTE 4G CPE Router User Manual
Warning: Avoid random Google Drive or MediaFire links. Malicious actors upload fake firmware with pre-installed malware.
Official sources:
Red flags for fake firmware: