Xavier NX on A205 carrier board - problems flashing the OS image (SDK Manager stucked at 99%)

I tried upgrading my Xavier AGX H01 to JetPack 5.0 via SDK Manager, and it does not recognize the board’s BSP, resulting in a similar error. NVidia claims that 3rd-party boards require their own firmware files. I see that Seeed has firmware for JetPack 4.6, but I don’t think they have 5.0 out yet.

Does anyone have an ETA on the 5.0 firmware?