Most affordable way to upgrade 0S?

I want to upgrade operating systems in Octatrack MK1 and Analog Four MK1 as well as install various preset packs & samples in them.
Is there a way to achieve this without having to buy anything else and if not what is the most affordable product or products needed?

You only need a computer.
Use Transfer for A4, and for OT you just follow the instructions on the readme document that you’ll find besides the .bin.
Basically just out the file on the Flash card.


An usb cable…


Indeed. Usually provided with the groovebox, though ^^

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Take your elektrons to public library, use computers for free, OS upgrades are free, use free sound packs.


Thanks everybody