To understand RPKG, you must first understand the ROM.

Today, if you find an old Nokia N95 or an E71 in a drawer, downloading an RPKG from an archive site and flashing a custom "de-branded" ROM is still the only way to remove the "Vodafone" startup animation. The community may have moved on, but in forums like (still barely alive) and Reddit’s r/symbian , the RPKG remains a sacred key.

: Users typically select the RPKG file through the emulator's device manager to "dump" the necessary system files into the emulator's data folders.