The poster and I forgot to mention to also replace the launchd file in /private/etc. This actually launches the corona jailbreak and will allow you to open cydia again.
The title says it all, really. I just updated an app in Cydia without paying close attention and Cydia uninstalled the Corona 5.0.1 untether! Now my phone boots to the lock screen and resprings. Any ideas?
Update 1: Even though springboard keeps crashing, I have continuous access to the file system over USB (thanks to afc2!). Hopefully there's some way to install over USB.
Update 2: iH8sn0w himself has offered to help me. Just waiting for him to have free minute.
Update 3: the reason Cydia uninstalled the Corona Untether was that I had edited SystemVersion.plist so I could install some software that had been build with unnecessary 5.1 requirement. DON'T DO THAT. Cydia will randomly decide that Corona is incompatible with your OS version and uninstall it.
Please help me, I did the same, but when I saw that it had uninstalled the corona untether I killed cydia and did not restart my ipad2, but I cannot reinstall corona because it thinks I am in 5.1, how can I install it manually?
First of all, DO NOT RESTART YOUR iPAD. Sorry for the shouting, but it's very important. It will be SO much easier since you have not restarted. I will be glad to talk you through it.
Now, do you have iFile, Mobile Terminal, or SSH installed?
login root [enter password when prompted]
apt-get update
apt-get install Cydia
Excellent. You're in good shape. I would suggest logging in via SSH and using the following commands:
This should work fine. If it does not, try the following:
1. Download Cydia Installer here.
6. Use iFunBox to copy cydia_1.1.6_iphoneos-arm.deb from your computer to the root folder / on your iPhone.
7. Open MobileTerminal and login as root as above.
8. Enter the following command exactly: dpkg -i cydia_1.1.6_iphoneos-arm.deb
9. Close MobileTerminal. Respring your iPhone.
10. You should now have Cydia on your springboard!
login root [enter password when prompted]
apt-get update
apt-get install com.chronic-dev.greenpois0n.corona
Oops! I'm getting my threads mixed up. I was thinking you'd uninstalled Cydia. My mistake.
What you should first try is:
Code:login root [enter password when prompted] apt-get update apt-get install com.chronic-dev.greenpois0n.corona
If that gives a dependency error because of the iOS version, let me know.
2012-04-16 17:50:16.362 MobileCydia[315:e07] Setting Language: en_US
2012-04-16 17:50:16.554 MobileCydia[315:e07] Could not find mapped image WhiteOnBlackEtch_CARRIER_RANDALL'S IPAD.png
bzip2: (stdin) is not a bzip2 file.
Smstatus:dpkg-exec:0:Running dpkg
dpkg: serious warning: files list file for package `com.chronic-dev.greenpois0n.corona' missing, assuming package has no files currently installed.
OReading database ... 3946 files and directories currently installed.)
Smstatus:com.chronic-dev.greenpois0n.corona:0:Removing com.chronic-dev.greenpois0n.corona
O:Removing com.chronic-dev.greenpois0n.corona ...
O:Removing com.rpetrich.belfry ...
Smstatus:com.chronic-dev.greenpois0n.corona:9.09091
reparing for removal of com.chronic-dev.greenpois0n.corona
Smstatus:com.chronic-dev.greenpois0n.corona:18.1818:Removing com.chronic-dev.greenpois0n.corona
Smstatus:com.chronic-dev.greenpois0n.corona:27.2727:Removed com.chronic-dev.greenpois0n.corona
O:Removing files.
Smstatus:com.rpetrich.belfry:27.2727:Removing com.rpetrich.belfry
Smstatus:com.rpetrich.belfry:36.3636
reparing for removal of com.rpetrich.belfry
O:Removing shared cache.
C:finish:reboot
Smstatus:com.rpetrich.belfry:45.4545:Removing com.rpetrich.belfry
Smstatus:com.rpetrich.belfry:54.5455:Removed com.rpetrich.belfry
Smstatus:dpkg-exec:54.5455:Running dpkg
O:Selecting previously deselected package kr.typostudio.iphoto501fix.
OReading database ... 3937 files and directories currently installed.)
Smstatus:kr.typostudio.iphoto501fix:54.5455:Installing kr.typostudio.iphoto501fix
O:Unpacking kr.typostudio.iphoto501fix (from .../kr.typostudio.iphoto501fix_1.1_iphoneos-arm.deb) ...
Smstatus:kr.typostudio.iphoto501fix:63.6364
reparing kr.typostudio.iphoto501fix
Smstatus:kr.typostudio.iphoto501fix:72.7273:Unpacking kr.typostudio.iphoto501fix
Smstatus:kr.typostudio.iphoto501fix:81.8182
reparing to configure kr.typostudio.iphoto501fix
Smstatus:dpkg-exec:81.8182:Running dpkg
O:Setting up kr.typostudio.iphoto501fix (1.1) ...
Smstatus:kr.typostudio.iphoto501fix:81.8182:Configuring kr.typostudio.iphoto501fix
Smstatus:kr.typostudio.iphoto501fix:90.9091:Configuring kr.typostudio.iphoto501fix
Smstatus:kr.typostudio.iphoto501fix:100:Installed kr.typostudio.iphoto501fix
Okay, I'm going to try to talk you through this. First I need to know which version of 5.0.1 you have installed on your phone (9A405 or 9A406). This is VERY important. If we try to install the wrong kernel patch, your phone will stop booting and you will be forced to DFU install 5.1. If you are not sure, PLEASE don't guess. There are ways of figuring it out if you don't know for sure.