If you made 9.3.3 iOS jailbreak, then you probably know that the application Pokemon GO refuses to work anymore, the developers of the application implementing a protection system against this software, so users were forced to temporarily give up the game as long as they still have jailbreak in their terminals.
The good part is that a solution to the problem was found very quickly, such as the tweak master ball was launched in Cydia for those who play Pokemon GO, allowing the deactivation of the jailbreak detection system in the Niantic application, after its installation the game works without problems in your terminals.
Tweak your master ball it is not available in Cydia's BigBoss repo, but in the repo http://cokepokes.github.io which you will have to manually add to the application, and then you will be able to install it master ball and Pokemon GO will start working the same as before you jailbreak, this being the only method to solve the problem.
No one knows why Niantic implemented a jailbreak detection system in Pokemon GO, but now you have a way to bypass it.
