I don't have the latest version of TWL, how do I update it?
What do you mean by "TWL"?
a) TWLoader, if you have scanned the QR in OP, you have latest version (5.0.1), if not, go to settings and press START. If it crash, install the cias that are on the _nds folder (read OP if you get lost)
b) TWL_FIRM, if you have a shutdown error screen, read FAQ to reinstall a new TWL_FIRM partition
