Yeah I always backup after every successful flash. It has saved my ass a bunch of times.Well whatever you do. If it does fix it. And you still wanna make changes. Copy and paste your whole hakchi folder and do your tests in that folder. If it works keep that folder if it doesn't then just go back to other folder and resync. It makes things so much easier. If it works once it will always work. So make sure you have a copy of your best most fully functional hakchi at all times. You don't have to custom flash again or anything. Unless you upgrade.