Gargoyle Forum

i think it's better to return to stock and reflash the one with "factory" in the name.
The strange thing is that your router is still alive xD

Anyway you should wait for further suggestions, maybe your router is fine...

An example of a post that indicate the factory.bin should be used - the factory file is fresh flashing (i.e. original stock firmware upgrade) if you have openwrt or gargoyle installed, you need to use the sysupgrade file to upgrade via the web gui This is the truth. Unfortunately the Wiki is right ...

i think it's much better to return to stock firmware before flashing openwrt!
In their forum there is a sticky thread with all the "revert to stock firmware" files to use with dd-wrt.