DSi mode doesn't like some carts, so someone fixed it

Bug fixes

• Fixed Ace3DS+ and R4 SDHC Dual-Core (r4isdhc.hk pre-2018, R4iTT 3DS, etc) support (@R-YaTian)

Known issues

• Almost none of the R4i-SDHC (i.e. all timebomb clones) are working in DSi SD card.
  • r4i-sdhc.com RTS and B9S models, as well as r4isdhc.com 2014-2022 models are known to work.
  • related issue: #3

20230410 hotfix

• There was an issue with only Acekard 2i showing in the menu. A recompile fixed this.

DSi support and other improvements

This changelog is based on @jason0597's v5.1.1.

What's new?

• Nintendo DSi support! This can now be used on DSi consoles both from the flashcards themselves and from Unlaunch
  • Using from Unlaunch will allow you to restore the backed up flashrom afterwards, running from the flashcard itself will require moving the backup and restoring on 3DS/from Unlaunch
• Added a custom icon
• (@lpla) Updated flashcard_core

Bug fixes

• Fixed failing to load on DSTT cards
• Fixed progress bar not properly handling multi-chunk operations (jason0597#12)
• jason0597#10 is fixed by using from Unlaunch

Known issues

• Ace3DS+ models, as well as r4isdhc.hk models do not work in DSi SD card.
  • related issue: #2
• Almost none of the R4i-SDHC (i.e. all timebomb clones) are working in DSi SD card.
  • r4i-sdhc.com RTS and B9S models, as well as r4isdhc.com 2014-2022 models are known to work.