You may have faced the continuous crashing of your jailbroken
iPhone (Stuck in boot logo) after installing some tweaks or unsupported tweaks which is
really annoying & you’re forced to restore your iPhone, iPad &
iPod Touch from iTunes which loses your jailbreak. But we have a tricky method that helps you to
fix this problem without loosing your jailbreak.
on your iPhone :
Step 1: Hold down Power button & Home button for 10-15 secs till you see apple boot logo again.
Step 2: Hold Volume Up button immediately until your iPhone
Step 3: Now “Slide To Unlock” your device and go to Cydia.
Step 4: Search for Cydia Substrate & Remove it.
Step 5: Respring your device and you have a Cydia on your
Home Screen. You can now installed your favorite tweaks again.