Some if you can't play most of your music in the Music.app. This is because you had preexisting music on the iPhone 4S/iPad 2 when you ran Absinthe. The way Absinthe works is that it creates backups (that's why it takes so long if you have a lot of data). In the process of creating these backups, it deletes most, if not all, of your music in the iTunes_Control folder. Most who report this issue had iTunes Match on prior to jailbreaking.
Here's the solution: Turn off iTunes Match on your iDevice AND iTunes on your computer. Now open Music.app and manually delete EVERY song by swiping to the right and pressing the red delete. It might be faster if you deleted Artists or Albums instead of individual songs. You now have a choice. 1) With iTunes Match still off on both devices, sync the music on your computer with your iDevice just like before you had iTunes Match. Or the slower way, 2) just turn on iTunes Match now on the iDevice and computer and manually download every song on your iDevice from the cloud.
Now all your music will work because there's not just a cached version of it on your iDevice, but an actual file.
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The purpose of this guide: if you want to keep your jailbroken device's settings and transfer everything untouched to your updated firmware iDevice or an upgraded iDevice. This works for all iPod Touch/iPhone/iPad.
From this point on, I will refer to the non-updated/old device as "old" and updated/new device as "new"
1. If you are jailbroken and want to keep ALL jailbroken apps and their settings, open PKGBackup (you can save to AddressBook or Dropbox but I HIGHLY RECOMMEND DROPBOX) and select everything you want to backup. I do not recommend backing up content in AppStore Apps. But you absolutely want Installed packages, Preference files (those are where the jailbreak data settings are saved), and all the User Sources. Turn off iTunes Match.
2. Plug in the old and right click the device on the left in iTunes and Transfer Purchases. When it's done, Sync and Back Up.
IMPORTANT IF YOU DO NOT WANT TO ACCIDENTALLY LOSE YOUR DATA
You may need to show hidden files and folders. To do this in Windows, press Alt to show the toolbar (you may not need to do this in some cases), hit Tools, Folder Options, View tab, Check the box to show all hidden files and folders. To see Library on OS X, in Finder, hit Go then press Option.
If you have a Mac, go to
~/Library/Application Support/MobileSync/Backup
Two-finger click your backup (if you have many devices, check the correct UDID. If you do not know what you UDID is, click on the serial number in Info in iTunes) and COPY it. Now paste the file to the desktop so now you have two copies of your backup.
If you have a PC, go to
YourComputerName/AppData/Roaming/Apple Computer/MobileSync/Backup
Right-finger click your backup (if you have many devices, check the correct UDID. If you do not know what you UDID is, click on the serial number in Info in iTunes) and COPY it. Now paste the file to the desktop so now you have two copies of your backup.
END IMPORTANT PROCEDURE
If you are updating firmware to jailbreak the same device and not using another device, restore to the firmware you want to jailbreak (5.0.1). If you are using a new device, just have it on 5.0.1 or 5.0 if you're using iPhone 4S and want to have the ability to unlock later. Go to the Welcome screen on the device (don't send diagnostic details to Apple), do NOT restore from backup or anything just yet. Just jailbreak your device with the tool (Absinthe).
When it's done, go into Cydia and install PKGBackup. Open PKGBackup and View Restore and restore all packages and ALL PREFERENCE FILES. It may show a fraction that isn't equal to 1 (like 45/67 or 78/90 is not equal to 1; 67/67 or 90/90 is equal to 1) so hit the button in the top right to select All preference files. Now restore everything. Reboot when it prompts you to.
Now you are ready to Restore from Backup in iTunes. This will put all your app data, text messges, system settings like Mail accounts, brightness settings, Camera roll, and icon layout like it was before after when we finish. After you restore from backup and sync all apps to your device, you may see apps out of place and messy layout. If this is the case, Restore from backup AGAIN. That should fix your icons to the way it was before.
If you see any errors in grammar or procedure, please let me know so I can edit it. I hope this aids you in your future jailbreaking quests. This is a procedure I have used for MANY devices over a long period of time so I can have absolutely the SAME settings and layout and data on my old device as my new. But now I am making my method public so you can have a flawless new jailbreak experience.
Here's the solution: Turn off iTunes Match on your iDevice AND iTunes on your computer. Now open Music.app and manually delete EVERY song by swiping to the right and pressing the red delete. It might be faster if you deleted Artists or Albums instead of individual songs. You now have a choice. 1) With iTunes Match still off on both devices, sync the music on your computer with your iDevice just like before you had iTunes Match. Or the slower way, 2) just turn on iTunes Match now on the iDevice and computer and manually download every song on your iDevice from the cloud.
Now all your music will work because there's not just a cached version of it on your iDevice, but an actual file.
---------
The purpose of this guide: if you want to keep your jailbroken device's settings and transfer everything untouched to your updated firmware iDevice or an upgraded iDevice. This works for all iPod Touch/iPhone/iPad.
From this point on, I will refer to the non-updated/old device as "old" and updated/new device as "new"
1. If you are jailbroken and want to keep ALL jailbroken apps and their settings, open PKGBackup (you can save to AddressBook or Dropbox but I HIGHLY RECOMMEND DROPBOX) and select everything you want to backup. I do not recommend backing up content in AppStore Apps. But you absolutely want Installed packages, Preference files (those are where the jailbreak data settings are saved), and all the User Sources. Turn off iTunes Match.
2. Plug in the old and right click the device on the left in iTunes and Transfer Purchases. When it's done, Sync and Back Up.
IMPORTANT IF YOU DO NOT WANT TO ACCIDENTALLY LOSE YOUR DATA
You may need to show hidden files and folders. To do this in Windows, press Alt to show the toolbar (you may not need to do this in some cases), hit Tools, Folder Options, View tab, Check the box to show all hidden files and folders. To see Library on OS X, in Finder, hit Go then press Option.
If you have a Mac, go to
~/Library/Application Support/MobileSync/Backup
Two-finger click your backup (if you have many devices, check the correct UDID. If you do not know what you UDID is, click on the serial number in Info in iTunes) and COPY it. Now paste the file to the desktop so now you have two copies of your backup.
If you have a PC, go to
YourComputerName/AppData/Roaming/Apple Computer/MobileSync/Backup
Right-finger click your backup (if you have many devices, check the correct UDID. If you do not know what you UDID is, click on the serial number in Info in iTunes) and COPY it. Now paste the file to the desktop so now you have two copies of your backup.
END IMPORTANT PROCEDURE
If you are updating firmware to jailbreak the same device and not using another device, restore to the firmware you want to jailbreak (5.0.1). If you are using a new device, just have it on 5.0.1 or 5.0 if you're using iPhone 4S and want to have the ability to unlock later. Go to the Welcome screen on the device (don't send diagnostic details to Apple), do NOT restore from backup or anything just yet. Just jailbreak your device with the tool (Absinthe).
When it's done, go into Cydia and install PKGBackup. Open PKGBackup and View Restore and restore all packages and ALL PREFERENCE FILES. It may show a fraction that isn't equal to 1 (like 45/67 or 78/90 is not equal to 1; 67/67 or 90/90 is equal to 1) so hit the button in the top right to select All preference files. Now restore everything. Reboot when it prompts you to.
Now you are ready to Restore from Backup in iTunes. This will put all your app data, text messges, system settings like Mail accounts, brightness settings, Camera roll, and icon layout like it was before after when we finish. After you restore from backup and sync all apps to your device, you may see apps out of place and messy layout. If this is the case, Restore from backup AGAIN. That should fix your icons to the way it was before.
If you see any errors in grammar or procedure, please let me know so I can edit it. I hope this aids you in your future jailbreaking quests. This is a procedure I have used for MANY devices over a long period of time so I can have absolutely the SAME settings and layout and data on my old device as my new. But now I am making my method public so you can have a flawless new jailbreak experience.
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