i0s_tweak3r

A lot of ppl modify the Flex patches directly from xml file so it looks like pass-through but actually they add a Selector, or edit it so u don't see the overrides in Flex app itself, only by looking at plist.
You can try just "%orig;" by itself. If you return nil you are modifying the "id" of the method tho. If thats what u want to do is return nil but leave rest alone, then just 
%hook class
method blah blah
{
%orig;
return;
}
Edited to add: Re-read first line that you didn't make it. Yeah you have to go to /Library/Application Support/Flex 3/patches.plist
Open the plist, find the patch, and there lies your answers. The overrides used will be there. There's some tutorials on here for manually editing Flex patches I believe for familiarizing yourself with how it was created.

There is currently no jailbreak available for that iOS version. You can periodically check here in the thread listing every jailbreak available for each different iOS version or range of versions, and where to get them. Also Reddit is good about keeping a similar list. 
As far as alternate places to get tweaks that work on non-jailbroken, we have a no-jailbreak section here at iosgods with many hacked games and apps.
If you search elsewhere you'll find other sources, we don't usually mention them tho because most steal content from this site and profit from it through ads, without permission from the creators of the hacks.  
As a general rule of thumb for hacked apps, if there's a tweak for it available for non-jailbroken, the most current and unaltered version of it will be here.  If there isn't one, try submitting a tweak request.
Sorry you lost ur jailbreak that really sux. Make sure u don't update any more tho; ur best chance of a new jailbreak is with oldest iOS u have.  

There's always installer 5 package manager coming out, hyped to be "the new Cydia, and more".
I doubt it'll be released b4 Saurik updates subtrate and Cydia though. The new jailbreaks (2 of em) are a neat new way of achieving root access, so besides updating for iOS 11 he has to add support for this new jailbreak style. 
Doubt he needs help- he probably already has a perfectly good version for most new devices and jailbreaks, he seems like is a perfectionist tho, and only likes to release something once per major iOS version update/JB, that's completely compatible for e1.  Read his changelogs. He does a lot.  
It's his choice to release a semi working beta now, that causes several problems but pleases a few, or he can wait till he's done and put it out how he wants it. 

I have others.  I just updated this one. Added a cool gradient background up top. 

Figured out problem too- yourepo changes the package names and the header table  needs the original package name. I think I can change just the packagename part tho in two of the plists and it should work in my beta repo. I'm thinking about releasing this one soon tho. (Gotta remove periods first.) ?  I've been working on it every day since the hurricane made me unemployed. 
I have another one called "Lockscreen Suite" I shared in here (and on Reddit) that I just want to add a couple things and then I'm gonna submit that to BigBoss.
Also have a Control Center Suite for hiding/adding stuff and am working on a CCviewTransporter where you can add a 3rd page to CC and put a youtube video inside, safari view, notifications, and possibly entire apps.

I just realized if you view images in the bottom of Filza, it will display the dimensions in pixels.  Several of the 2x icons aren't 32x32, but 152x152, which I think is the size being displayed. I haven't edited them but I'm guessing that is the problem.  
Also when I looked at the iG icons in Filza (from the patcher nic template),   they are 50x50 for reg icon and 58x58 for @2x.      (I thought 16x16 and 32x32 were correct specs, as that's what I read previously in the tutorial on here for adding icons to pref bundles.) The iG icons seem to display around the same size as most other tweaks though.
I got an app to resize images by pixel so I'll play around with it and should be able to solve this. I'll read up on the subject as well to see what ideally the specs should be.

Sorry what a lame reason. I figured it out finally. When running apt-get update in terminal a repo kept timing out, and causing trouble, rasha1.in/repo, so I deleted that and suddenly all is good again.