Analogue has just released firmware version 4.7 for the SuperNT that fixes a bug with Super Game Boy. No further details on the issue were given. Also, there’s no v4.7 jailbreak firmware available, so if you were enjoying basic cart support from your SuperNT, it’s best to hold off: https://support.analogue.co/hc/en-us/articles/360000557452-Super-Nt-Firmware-Update-v4-6
As a side note, while I do have mine jailbroken for convenience & testing, I still use my SD2SNES for all SNES gaming. The features are just too overwhelming not to.
SD2SNES Everdrive Krikzz plays all SNES games including Super FX and DSP(as of May 27, 2023 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)