Hello, I have recently updated my kefir and firmware to be able to run the latest FAR for example. While everything works perfectly on microsd that I have used for the update, when I insert another card (with an old version of bootloader etc), obviously I receive a message "old nyx GUI found" etc... This means I have to upgrade software on my old card, while it is not clear how am I supposed to do that. Problem is I have lots of other games on that older card, and I don't want to reinstall them. What is the best way to upgrade a bootloader? I have tried just to copy a bootloader folder from my "working" card, but it did not work. Thanks a lot!