Encore un code de déblocage perdu ! merci

Hello, I'm looking a lot like the unlock code of my radio after removing and charging the battery. This is a Renault SCENIC Security code written behind the casing of the unit (or by pressing simultaneously the keys 1 and 6 malignant - I found the tip on a forum after removing the radio ... too late) is: S827 Thanks for your help = code 7150 You must hold at the end to store your code. IF YOU DONT HAVE ¬ KEY THEN PUSH THUMBWHEEL IN AND SOME HAVE {A¬} KEY Turn on the radio and the display will show 'CODE' Use the steering controls for code entry. Press the [ ¬] button then rotate the thumb wheel for the correct first digit Press the [ ¬] button then rotate the thumb wheel for the correct second digit Press the [ ¬] button then rotate the thumb wheel for the correct third digit Press the [ ¬] button then rotate the thumb wheel for the correct fourth digit If the correct code is now shown on screen, press and hold the [ ¬] button for up to 10 seconds to store the code FOR NO STEERING CONTROL press the first preset button for the 1st digit, second button for the 2nd digit third button for 3rd digit forth button for 4th digit then press and HOLD button 6 to store. for 10 seconds and on some it's hold 5 to store.