May want to look at this addon to RP, too, which is even better for emergency debricking Just In Case.
https://www.mobileread.com/forums/sho...d.php?t=232507
Don't worry about making "restore points". This has a handy-dandy 5.4.0 image for flashing via diags mode (that's what the rescue pack gets you):
http://ixtab.tk/kindle-touch-images/PW2/README.txt
And you can apply any official firmware update from Amazon, since they contain full system images. Except 5.4.0 because they never released an update, it was the first fw version. And fw5.5.0+ has protection against "downgrade attacks", but in that case, you can still boot to diags and overwrite the partition with ixtab's 5.4.0 images.