liquid 2.2 update fail

hi, i've tried to update my liquidE to 2.2 evil or somewhat... its a custom rom i found. the setup wrote that it was succesfull but my phone writes: there's no service , and i cant find any network because of sim card problems... everything else works on the phone^^ and of course the usb does not detect the phone but it charges the battery so i cant just install another rom. i couldnt do backup before the install cause there was not enough free space -.- its like i have a ****ing liquidtouch ( like itouch ) i can do everything with it except calling and sms...
please help somebody