Settings lost on reboot

[DoesItMatter]

Some 4MB devices may not work with Gargoyle with 1.7 upwards

Even though you have a 4MB stated flash rom,
you don't always have 4MB of flash space available

Depending on the manufacturer, some have special recovery modes
and other parts of the flash allocated, so the max flash size you
can flash can vary and be as low as 3.25MB

If you don't see your device listed in the Download section,
the size of the firmware may be too large for your flash size
and during the build, it won't generate the image

You may have to use pure OpenWRT (build your own or download)
to continue using your 4MB flash router, or get a new 8MB flash router