(Part 2) Top products from r/jailbreak

tomf64 has explained it well. I'd like to add a little more to that, however. All the links he has given use Theos as the build system, and Logos for some nice syntactic sugar that Dustin Howett was kind enough to grace us with.


However, to be an effective developer, one must understand what is going on behind the scenes. For that, I'd suggest to pick up a nice book for learning Objective-C. Programming in Objective-C by Steve Kochan is a great book to start, in my opinion.


Once you're through with that, use Google to find and read one of the tens of thousands of "Get Started With iOS Development" tutorials (Like this one). The concepts taught there will be really easy to pick up, assuming you have a fair understanding of Objective-C. Write a few little apps for yourself, make sure your fair understanding expands to the hows and whys of everything.


Writing a tweak is a different beast altogether. It requires some knowledge of programming patterns (usually Apple engineers', you'll see them with experience), some guess work, and a lot of patience. You'd also do well to know how the Objective-C runtime works. Tweaks rely on the openness provided by it to get the job done. This is a great article to get you started, after which Apple's own Runtime Reference teaches you how to use everything.


If you have gone through all of these the articles provided by tom will suddenly make a lot more sense that they did before. The point of this comment is not to intimidate you, but I have seen a lot of newbie devs jump right into tweak making without having their basics clear. Then they're simply like a fish out of the water. Feel free to ask me anything more you may want.

EDIT: Actual line breaks. Whoops.

If you don't have any prior knowledge with programming, I'd first recommend learning Python. If you do have programming knowledge, then jump straight into ObjC. I read these 3 books and my Objective-C knowledge grew so much. I highly recommend reading these books.

Book One

Book Two

Book Three

I'd recommend reading these books in the order I listed them.

After you have read those books, you'll want to get friendly with theos. Theos is what you will use to make your tweaks. Learn how to install/use it here: http://iphonedevwiki.net/index.php/Theos/Getting_Started.

Now, you can look at open source tweaks. There is a great place to see a lot of them: http://iphonedevwiki.net/index.php/Open_Source_Projects.

Once you are comfortable, get started writing tweaks!

Always feel free to PM me if you need any help or have a question. :)

I prepare for my medical classes using those books:

Campbell Biology (10th Edition), truly an amazing piece of work would really encourage reading it, clear explination of concepts that people seem to forget when they progress further into the subjects

Chemistry: The Central Science (13th Edition), perfect referal in case you forget vital concepts of chemistry, works out well but fails in the orgainc chemisty

And for further reference we need to also buy even though some of the fact are outdated Organic Chemistry with Mastering Chemistry and Solution Manual (8th Edition), I found that this has a really sturdy and "enjoyable" methods(yes I enjoy what I study), and this is just half of it.

Now personally I have a "side job" that is paying me off really well and I couldn't even complain about it, but for most students they need even more books for "reference", education should be for free, I personally will not lie and straight out tell you that I upload these books on several websites, some in my session rely on much older books to study. I do support the fact that people should be rewarded for their efforts, yet not take it out on people, I really think the governments should fund & pay them instead.

Lol it happens, I normally clean mine every couple months and check it every so often to make sure it's clean. You can also blow in it as you clean with a toothpick to get any extra stuff out.

I have a couple of these brushes for cleaning phones I repair they work great.

http://www.amazon.com/ShaverAid-Electric-Shaver-Cleaning-Brush/dp/B001CJ693A

ok i got you, but i really dont think this course will help you with that. there are books that cover exactly that topic like this one here

https://www.amazon.com/OS-X-iOS-Kernel-Programming/dp/1430235365

doing the course AFTER reading this book, will probably have a greater learning effect

Rather than a book, I highly recommend watching the Fall 2011 Stanford iOS development course. I had spent a whole summer going through this book and, while the book is decent, it only briefly touches iOS development.

A year later, I'd forgotten most of what I'd learned, and finally had an idea for an app. After spending about two weeks watching the Stanford lectures and doing a few of the course assignments (which are all available to download) I was ready to start in on my app, just going back in to watch a lecture here and there on big topics like Core Data and concurrency and learning the rest as I went from the documentation and Stack Overflow. And now I'm preparing to put out a beta at the end of the month. I highly recommend the course.

EDIT: The course does assume you have a decent amount of programming experience, which I did as a Computer Science student. It may be harder to get through if you haven't programmed in something like Java, C#, etc and don't have a basic understanding of code patterns.

That book is great. I'd also recommend Hacking and Securing iOS Applications. There are only a few chapters about iOS exploits, but it goes into good code-level detail.

There's also some overlap in techniques and technology in Mac Hackers Handbook

I don't know much about MyWi, but I use this hardware in my own home to get internet from a downstairs router to my upstairs desktop by sending it over the powerlines.

http://www.amazon.com/Sling-Media-SlingLink-Powerline-SL200-100/dp/B000NJ5VLQ

They've aged quite a bit, but a pair has worked great for me for many moves.

You can try something like a conductive glue and apply it with a toothpick.

http://www.amazon.com/Sciplus-Electrically-Conductive-Soldering-Wire/dp/B000Z9H7ZW

In the reviews on there some guy talks about how he fixed an internal connector on his phone with it so worth a shot I suppose. I think taking it to a professional might cost you enough to warrant actually buying a second hand replacement phone if you so desire.

this one looks good

Well you don't need to be jailbroken to use this with your iPad.
L5 Universal Remote Control

Buy one of these bad boys.


Hook your iPhone up to your HDTV through HDMI.

Download the Justin.tv app, the netflix app, etc.

Use your phone as a TV watching device.


I'm doing it right now with my 4S, love it.

I believe I was thinking of this one but unfortunately it doesn't look it will work with the volume buttons.

It looks like you can also find generic replacement cables on ebay- example.

I wasn't referring to the charging wire kit, I was talking about the wireless receiver. And you can use it with mac with this Driver

Ah I see what you meant now. I actually have the Bose earbuds. No replacement cable would work for this. I was thinking more along the likes of this but not sure if it will work still.

Will do, also not sure what a sidebar is. Gonna go checkout a book from the library on sidebars.

EDIT: is this what you mean? https://www.amazon.com/Sidebar-Book-I-Gwendolyn-Olmsted/dp/1502573326
if so then thats ( ͡° ͜ʖ ͡°)

Yep, an ugly keyboard

>What exactly do you mean by watching it to see CPU? I'm quite familiar with Top -u, but is there a way to view just that processes CPU? I kind of want to watch it through my computer while browsing and see what happens.

You need to get its PID first. My favorite way to do that is with System Status from the App Store, which lists running processes with PIDs (although you can't kill them or anything).

Then use:

top -pid PID

To see just that process's stats.

>Does that Jetslammed tweak have anything related to this or help this?

Jetslammed can change a launchdaemon's HighWaterMark RAM limit, the limit of sustained RAM usage at which Jetsam automatically kills the daemon.

http://newosxbook.com/articles/MemoryPressure.html

The HWM can also be changed manually, but, in the end, it doesn't really help that much unless a daemon is only dying due to exceeding its HWM.

It can still be killed for other reasons if the system is low on memory.

It doesn't actually keep discoveryd from EVER being killed, so it doesn't really solve the issue of very large hosts (>300 KB) files causing random website disconnects due to discoveryd dying, leading to DNS failure.

It really just fixes it so that you can have Wifried and a small ad blocking hosts file at the same time since Wifried + even a small hosts file (like Light UHB) will cause discoveryd to use about 9-10 MB, exceeding the 8 MB HWM limit for a long period of time, causing discoveryd to be automatically killed, causing Wifried to re-initialize Wifi, causing random Wifi disconnects, which is even more problematic than even a DNS failure.

Wifried with Jetslammed raises the HWM for discoveryd to 12 MB from 8 MB, preventing the HWM killing of discoveryd with Wifried + small ad blocking hosts file. A large hosts file will exceed even this new limit, but, in that case, where discoveryd uses 20 MB or more, it will be killed by the system anyway for other reasons not related to the HWM.

>So do I have the correct Light UHB? Is that the one you use? I guess I might try reinstalling and maybe see. Haven't had an issue since its crash and (haven't checked today) haven't seen it anywhere near the top when running "top".

I use Light Untrusted Hosts. I've watched discovery's PID for about a month now. It's not being jetsam killed anymore even if I load a LOT of tabs and really stress it out. It never goes over 8 MB (the HWM) for any sustained period of time (even 8 MB requires A LOT of DNS activity), and never reaches enough RAM usage that the system would think to kill it to free memory (10-20 MB). Gamed (the GameCenter daemon) uses more memory than discoveryd with Light UHB . . .

>-unrelated- I love learning about all this stuff and your fountain of knowledge so far. Mind if I asked where you learned so much? I've been learning a lot about daemons lately, especially locationd and backboardd. I'm just curious as to where I can learn more about this stuff, learn how to read crash logs as so far it's just from the little experience I have, etc. I just can't find any good resources..

I've used OS X since it was in beta, and iOS is secretly just OS X in disguise with a TouchUI, a few processes missing, and a few processes added.

This book has been helpful to me in understanding jailbreaking, although it is a bit dated:

http://www.amazon.com/iOS-Hackers-Handbook-Charlie-Miller/dp/1118204123

Also a bit dated, but you may like it if you have a Mac:

http://www.amazon.com/Learning-Unix-OS-Going-Terminal/dp/1449332315/ref=sr_1_1?s=books&ie=UTF8&qid=1418694791&sr=1-1&keywords=OS+X+unix

This wiki is also good. Many devs post on it:

https://theiphonewiki.com/wiki/Main_Page