actually, I did get quite a few boot loops before perfecting my "tweaks" Just got one yesterday but now have freed up close to a total of 180MB. Found some very secret, deep in caches that contain huge files that can be deleted, although some are not supposed to. I deleted unwanted pics, e.g. non-@2x ones since I use the 4th Gen Touch and unsed Keyboards. The biggest keyboard file was nearly 10MB. Also unused themes from Zeppelin, which I have. You can actually delete the built in ones if you want. If you are as meticulous as me, going through each and every file, you can free up lots of space taken up by Pictures you don't need or used. Deleted all except the one single file I used for my carrier, even went in to remove the non-@2x ones leaving only 6 super-small KB files. Also removed Launch Daemons unused. At most, if I do want them, I can replace from the backup I kept in my Touch. If you really want, You can copy all the files to your Harddrive/Flashdrive and link everything back in. It can work to a certain extent, at the loss of Harddrive/Flashdrive space. Did not do this because it is very unstable and you can potentially get 1) into a bootloop or 2) get your links somehow deleted and also get into a bootloop. There is more and I would be releasing a post about this as soon as I figure which ones are safe and which are not.