Hey,
I jailbroke my iPhone 6+ iOS 8.3 with TaiG in July, it's been working fine for some months until I couldn't install any new tweaks anymore (no icon / preferenceloader error in settings, but Cydia acts as if everything had been installed successfully) except for terminal tweaks (or how you call them - I mean ilexrat).
I have been waiting for a while with that step since I had already installed the tweaks I needed when everything was working. But now I was going to start making Clash of Clans videos and therefore tried installing recordmyscreen (which of course didn't work). I reinstalled PreferenceLoader and two other necessary tweaks multiple times without success. Then I remembered having used iLex Rat on my old iPhone 5 in a case like that to delete my tweaks and keep the jailbreak. So that's what I tried and it didn't really go well. I could backup my tweaks and I could delete them. But when I now start my iPhone there are no icons on my home screen anymore, but I can use Spotlight, I have a lock screen and can access the control center and the message center, but via spotlight search I can only find apps I installed from the AppStore or the ChineseStore from the TaiG Jailbreak. I do not find any System Apps / Cydia / Cydia Tweaks. Even Settings are not displayed. My guess was to start in safe mode which I did but even in safe mode there were no icons at all on my homescreen.
Tyvm for any help.
edit: I could make a backup with iTunes and I can restore it to iOS 9.1/9.2 but then I'll lose the jailbreak which I'd like to avoid.