It is risky indeed, I wouldn't do it, but if it's the only option, well there's nothing else to try, it's probably tied with some CFW issues, maybe tied to the type of bootloader you're using.
I'm not expert-enough for this, maybe it could be tied to the firmware version (like legit switch being 10.2.0 and CFW running on 9.x.x) I don't know, dudes on this thread came up with many possibilities and nothing worked but the final option.
If you've made it work, would be cool to share it so we'll know about it if somebody comes accross the same issue.
GL !