SL/R129: OEM radio coding




I recently bought a R129 radio from Japan. Its OEM Becker MB radio 30, part number A 208 820 02 86, good condition, good price 10$. I also have OEM radio from USA (A 208 820 01 86) but the buttons are falling apart. I bought the Japan Version for parts to revive my old unit. Is it possibile to recode the Japanase radio frequency to EU? Maybe some secret buttons combination?
part number
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