Hello I can’t install the latest overbridge (old mac) and the digitakt 1 firmware 1.52 doesn’t seem to work with overbridge 2.5.1. what to do now? Go back to 1.50? But how? 
thanks for the help everyone
Hi
Post some more details and someone will try to help you out.
Mac / pc details etc
Anything you created in 1.52 will probably not work or be very buggy on 1.50. To downgrade to 1.50 you would perform the same procedure as any upgrade - first create a backup of your existing content and name the folder something like 1.52 so you know what it is, then use the upgrade procedure but using the 1.50 OS file instead of 1.52 and it should downgrade the firmware to 1.50.
I would suggest that you first contact Elektron via the contact form in your elektron.se account and ask them if there is anything you can do about the overbridge situation prior to downgrade, and ask them to confirm whether or not downgrade is your only option now.
If anyone is aware of a workaround, it’s probably elektron support, however if you need to downgrade just follow the steps I laid out, backup first, downgrade second.
Thanks a lot. Do you know where I can find a 1.50 sysex file, Just in.case? Can’t find It on the elektron site…