Sonic Robo Blast 2/Sonic Robo Blast 2 Kart ports not launching properly

[zeuvia]

Currently am on an RG350 with the latest firmware and both SRB2 and SRB2K's "Active" ports immediately crash upon trying to boot. Have tried multiple ways of getting the .opk files onto the unit; FTP with Filezilla and WinSCP, and even the file transfer tool that's built-in.

[SeongGino]

Which firmware constitutes as "latest firmware" in this instance?

The "latest" SRB2, and the only release of -Kart, only works on the upstream OpenDingux nightlies, not the device-specific firmwares which are going to be considered "legacy firms" in future.