Default [Q] Update.zip Wiko Wax - Status 7 error

I'cant update my Wiko Wax: everytime that i try to update from the recovery or from ADB there is this error
Code:
assert failied: apply_patch _check("/system/bin/debuggerd", "75365204.....") E:Error in /tmp/update.zip (status 7) installaion aborted
A few days ago i try to update with Flash Gordon ( http://forum.xda-developers.com/show....php?t=2250555 ) and i brick the phone... I'm desperate and I want try everything before bring it to the Wiko assistance because i'm not sure that for this problem the waranty is guaranteed... Maybe updating the phone will be unbricked.
Sorry for the bad english but i'm Italian ;)