Hello,
Does anybody know in what version of the OP-1 firmware was the this effect (attached pic) available?
I am currently running firmware R. 00218 and my OP-1 does not seem to have this…
Thanks in advance!

Hello,
It’s not on any actual firmware. Just download and add this patch, and you’ll have it.
https://drive.google.com/open?id=1by7Kf6MBfj8vcLcntH3baHO53pg0HiET
Great! Thanks for the info. Actually, I’ve now discovered the juicy discussion thread for Custom Firmware on the OP-1, so everything is clear now…
It’s not on any actual firmware. Just download and add this patch, and you’ll have it.https://drive.google.com/open?id=1by7Kf6MBfj8vcLcntH3baHO53pg0HiET
A few questions if I may:
Thanks!
Wait, so you don’t have to install the custom firmware to get that effect? just have to install that patch? Do I put it in the synth or drum folder? thanks!
Wait, so you don't have to install the custom firmware to get that effect? just have to install that patch? Do I put it in the synch or drum folder? thanks!
Same question, thanks!
Wait, so you don't have to install the custom firmware to get that effect? just have to install that patch? Do I put it in the synth or drum folder? thanks!I can’t speak about this patch in particular i know @3sleeves has iter(secret synth) and filter(secret filter) for both drum and synth on op1.fun but yeah just drop in and you’re good to go
Thanks Grumps! Searched after asking, and this thread helped me figure out how to do it: