rpi2, on retropie install i could just barely see under the quake 3 arena install “gzip stdin not in gzip format” when finished installing and i run quake 3 arena i see “/home/pi/roms/ports/Quake III Arena.sh: line 2:/opt/retropie/ports/quake3/ioquake3.arm :No such file or directory”
also “sudo rpi-update 192” results in
gzip: stdin: not in gzip format
tar: Child returned status 1
tar: Error is not recoverable: exiting now
These are two issues – firstly looks like a networking problem or something else happened during install – you can reinstall the bits that failed.
the rpi-update part is unrelated – rpi-update takes a single parameter if required to install an older firmware which is the sha1 of the repository revision. 192 is not valid. You shouldn’t need need to use rpi-update btw – new firmwares are packaged when ready.