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- Firmware / Software upgrade
Roland U-20 – Version 3.03 Firmware OS Update Upgrade U20 [Download]
- €5,00
- https://www.youtube.com/watch?v=IPJPoqow_54
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- Battery Replacement
Roland D-110 U-110 MT-32 JV-880 MC-303 U20 – Battery Replacement Fix
- €4,29
- New Replacement 3V Coin Battery and Holder with Wire leads https://www.youtube.com/watch?v=I4sGG8IyG6g
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