| Symptom | Likely cause | Fix | |---------|--------------|-----| | | Wrong firmware for the hardware revision or corrupted file. | Re‑flash using the exact firmware version for your revision. If the device is in a “bricked” state, you may need to perform a TFTP recovery (check the manual for the recovery mode key combination). | | Web UI reports “Invalid file format” | File is compressed (e.g., inside a ZIP) or not the raw firmware image. | Extract the .bin / .img from any archive before uploading. | | Upgrade stalls at 0 % or 50 % | Unstable Ethernet link or power glitch. | Use a different Ethernet cable, a powered switch, or a UPS. | | After upgrade, some services (e.g., DHCP) stop working | New default settings overridden your custom config. | Re‑apply the saved configuration file or manually re‑configure the affected services. |
: First, check the official website of the manufacturer, in this case, Satlink. Look for a section named "Support," "Downloads," "Firmware Updates," or something similar. satlink ws 6933 firmware download