Help/Support Cydia and some applications aren't opening after reboot

[yasin213 4 4 7.1.2]

I'm rebooting my iPhone 4 (7.1.2) and Cydia,Safari,Calculator,Weather,Whatsapp and all of tweaks aren't opening. I can't see my tweaks in Settings,So, I'm jailbreaking and Pangu gives an error "Jailbreak failed". These applications working after that, but if I try reboot, Cydia and other things are crashing again. How can I solve this problem? Can someone say me what's the default tweaks in Cydia after jailbreaking too? Thanks. (I'm sorry for my bad English).

[Xuhaiid 940 9]

Go to cafe mode remove cydia substrate and install it again

[zzmorg82 233 iPhone X 15.1]

Downgrade your Cydia Substrate and try again.

[DanYal 1.1k iPhone 6s Plus 12.4]

I'm rebooting my iPhone 4 (7.1.2) and Cydia,Safari,Calculator,Weather,Whatsapp and all of tweaks aren't opening. I can't see my tweaks in Settings,So, I'm jailbreaking and Pangu gives an error "Jailbreak failed". These applications working after that, but if I try reboot, Cydia and other things are crashing again. How can I solve this problem? Can someone say me what's the default tweaks in Cydia after jailbreaking too? Thanks. (I'm sorry for my bad English).

Restore your device and jailbreak it again 

[kasimarshad123 1 5]

Try deleting the tweaks you installed most recently, not all of them

[yasin213 4 4 7.1.2]

Go to cafe mode remove cydia substrate and install it again

 

 

Downgrade your Cydia Substrate and try again.

 

Thanks for your helps. But it didn't work.

Restore your device and jailbreak it again 

Thanks for your solution. I'm using Windows XP, iTunes isn't working, only iTunes 10.5 is working but it isn't working. It says "You must update your iTunes." I tried "redsn0w" too, but it isn't accepting IPSW. Now, I should ask from my friends for their computers.

Try deleting the tweaks you installed most recently, not all of them

 

I tried deleting all tweaks. But I didn't delete some tweaks, Cydia says that " This isn't safe. Do you want continue?"

I was so angry that I thought deleting "Cydia Installer"

It didn't work too.

Updated November 15, 2015 by yasin213

[yasin213 4 4 7.1.2]

Note : If I try respring, this problem isn't happening.

[Rook 568k iPad Pro (2nd gen) 17.4 Donor]

Note : If I try respring, this problem isn't happening.

Try them in Safe Mode. 

 

You can also try Semi-Restore.com.

[yasin213 4 4 7.1.2]

Try them in Safe Mode. 

 

You can also try Semi-Restore.com.

 

I can't install SemiRestore because my .NET Framework version isn't enought for it. I found a tweak called "BetterSemiRestore". I'm trying restore now.

Updated November 16, 2015 by yasin213

[yasin213 4 4 7.1.2]

I pressed "Restore" button but tweak crashed. I pressed "Re-install Cydia" button and my Cydia removed! I opened Pangu and I saw that my JB removed. I tried opening Safari, Calculator etc. and they crashed. I'm jailbreaking now. It seems I need a new computer so I can use iTunes for restoring. I can't restore my iPhone without iTunes. Thanks to all.

@@DiDA  you can lock the topic.