You can convert sms and gbc games into gba file and play them on your RS-97 links below
Guides links below thanks to funnyplaying.com
Guide GB-GBC
Guide Nes
The SMS Advance http://goomba.webpersona.com
For GBC I used Goomba Color Alpha 6: http://nintendo-ds.dcemu.co.uk/goombacolour.shtml
Goomba 2.0 is able to use savestates, even though the menu is inaccessible because of the L&R issue you can use R&Select to quicksave and R&Start to quickload. Unfortunately doesn't work for GBC roms.
Source Dingoonity https://boards.dingoonity.org/ingenic-jz4760-devices/new-revo-k101-mini-in-the-wild/210/
I'm really hopeful with the RS-90. I will follow up with your site, but thank you.
Hi Friend and welcome to my site the RS-90 does not have a opendingux firmware just yet but i hope soon. It will as it is a popular device like the rs-97 so i decided to add it to this site so we hope very soon you will know about it here for sure.
Hello, I'm Brazilian and I love your work and effort for this little device. I made the purchase of a rs 90 in mid-February I will receive now in April, I would like to know how the discoveries of opendingux in the system. thanks