Vauxhall Corsa Safe Mode Message on CD Player?

paul w

Rookie
I have just changed my battery and now safe mode appears on the cd player. I know that if i take the radio out of the head unit then i can get the serial number and get my code from the vuaxhall dealer. However, the top right pin on the radio is very stiff and it is really hard to get the radio out. Is there an other way of removing the radio or getting the safe mode message off the radio screen without removing the radio? Please only respond if you have 95% answers. Thank you
I put 95% as on a previous question somebody claimed to know the answer and they provided me with 100% wronf information
 
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