I came across this thread after encountering the “The Country Code is not exist!” error on my RT-AX88U. Summary of events:
- Encountered issues with FTP remote access. Attempts to update firmware failed.
- Reset to factory defaults and restored settings. FTP issue fixed. Updated firmware manually, which worked.
- Later that evening I noticed WiFi strength is severely degraded, with multiple dead zones in the house that were fine the day before.
- Tried many troubleshooting step, eventually switched to ISP router and connected the by Ethernet AX88U in AP mode with radios disabled (basically using it as a switch and NAS at the moment).
- Attempting to access the Wireless settings currently gives the error “The Country Code is not exist! Please enter Country Code.” (but only while radios are disabled).
I appreciate the router and symptoms are a bit different, but doesn’t anyone have any idea whether the cause (a corrupt manufacturing partition?) might be the same, and if so, whether there’s any chance of me getting this fixed? Thank you.