Tampered with it by using redsn0w i guess. This would be my next try, if nothing severly speaks agains it: Try redsn0w again and hope that cydia is back after.
Then try to run blacksn0w.
Tell me: Incase i manage to get redsn0w to summon cydia again, can i do anything to store my ECID SHSH?
Thanks for all you help, i really appreciate it!