Content Comparison

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Install CR97 (1nF) and R106 from the bottom side otherwise the Mode Switch will not fit.

BU -battery   Wire port 28 (not sure what to expect here but I measured somewhere around 6VDC iirc)
6VDC    Wire port 30
15VDC    Wire port 33
5VDC    Wire port 34

Issues:

Issue 1: (see service notes from Roland to check the correct layout) 

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C3= C403 100uF/16V electrolyte polar

CPU update/firmware/bootloader

in case you want upgrade the firmware, you have to update the bootloader.

I´dont give support about the update processes since I bricked my CPU while updating it and ended in a installation of an original CPU 

https://github.com/sunflowr/recpu/releases

1.4.3 Version:

bootloader:               bootloader.1.4.3.syx                        

REEMU              reemu.1.4.3.syx                        

1.30: don't use it (buggy)

1.20 Version

bootloader:              bootloader.syx                        

REEMU:              reemu.syx