In 2021, a user on the OpenWrt forum reported that after flashing a custom firmware build, they found fg-optional-useless-files.bin in /tmp/firmware_cache/ . The file was 25 MB. Upon deletion, the router’s web interface continued to function perfectly, but the scheduler for automatic reboots stopped working.
FitGirl's primary goal is to provide the smallest possible download size. This is achieved through a "Selective Download" feature, which categorizes files into essential and non-essential groups: fg-optional-useless-files.bin
: When downloading via a torrent client, you can uncheck this file to save space. Installation In 2021, a user on the OpenWrt forum
Because the file is labeled “optional” and “useless,” it suggests that the developer intends for advanced users to be able to delete it without breaking functionality. fg-optional-useless-files.bin