Install dev .csu for CTR (o3DS) dev units

[Dionicio3]

Nintendo never made an SD updater for CTR (o3DS) units, instead relying on either sending the system updater over the debugger, or by using a CTR flashcart. Some people (such as myself) don't have either of these options available to them. I understand this is probably wildly outside the original scope of this, but it would be really helpful if this was implemented as I'm trying to update and region change my dev unit

[profi200]

I would recommend to just extract the .cia files from the .csu (it's just a standard gamecard image if i recall correctly). They should be somewhere in RomFS. Parsing and decrypting a .csu in userland is out of scope and would require dumping keys to the SD card.

[Dionicio3]

Sorry about the late response, I did end up extracting all the .cia files from the .csu and installing them, but weirdly enough it didn't change the region of the console. I'm trying to region change from EU to NA and now I have both region's system titles installed. I'm kinda stuck and don't know where to go from here, and again I understand if region changing a dev unit is outside the scope of this tool.