# Slim Phatty M1 Big Sur **URL:** https://forum.moogmusic.com/t/slim-phatty-m1-big-sur/21519 **Category:** Little Phatty & Slim Phatty Forum **Created:** [May 7, 2021, 6:13pm UTC](https://forum.moogmusic.com/t/slim-phatty-m1-big-sur/21519 "2021-05-07T18:13:09Z") **Posts on this page:** 6 **Page:** 1
### Author: ![kole.laca](https://forum.moogmusic.com/letter_avatar_proxy/v4/letter/k/4491bb/32.png) [@kole.laca](https://forum.moogmusic.com/u/kole.laca) #### Post date: [May 7, 2021, 6:13pm UTC](https://forum.moogmusic.com/t/slim-phatty-m1-big-sur/21519/1 "2021-05-07T18:13:09Z")
Hello guys! There is anyone that use Slim Phatty (or Little Phatty) with the new Apple Macbook M1 Big Sur? My Macbook air M1 Big Sur recognize all my external usb/midi devices (Korg SV1 keyboard; Waldorf Blofeld synth; Behringer umc1820 audio interface; Akai APC40 controler; Midistart music 25 midi keyboard) except Moog Slim Phatty! No one of these devices needed an update to be recognized by the computer. SF is recognized in the Midi Configuration window but it appears like not turned on. In all the other devices is selected “on” automatically. There’s no way to select “on”. I tried with another macbook m1 Big Sur and was the same. With my old macbook pro (intel i7, OS 10.13.6) everything works fine. Firmware of SP is updated to 3.21 690/31 version I contacted Apple and they said that it is a manufacturing problem. Can anybody help me? Thanx a lot! ![Schermata 2021-05-10 alle 11.36.34.png](https://forum.moogmusic.com/uploads/default/original/2X/3/3527defa2e91f06d24514b8fe20654d43bff24c4.jpeg) ![Schermata 2021-05-10 alle 15.06.53.png](https://forum.moogmusic.com/uploads/default/original/2X/d/dc712b78925b199acaf2c55bb1a6fefdd83852e1.png) ![Schermata 2021-05-10 alle 15.06.34.png](https://forum.moogmusic.com/uploads/default/original/2X/3/3245f60c80691e53a1428e586f10692a3788aa22.png) ---
### Author: ![Rowel](https://forum.moogmusic.com/letter_avatar_proxy/v4/letter/r/e56c9b/32.png) [@Rowel](https://forum.moogmusic.com/u/Rowel) #### Post date: [September 25, 2022, 1:15pm UTC](https://forum.moogmusic.com/t/slim-phatty-m1-big-sur/21519/2 "2022-09-25T13:15:25Z")
Hi! I have this same problem with my Mac Studio. Does anybody know how to fix this? ---
### Author: ![Rowel](https://forum.moogmusic.com/letter_avatar_proxy/v4/letter/r/e56c9b/32.png) [@Rowel](https://forum.moogmusic.com/u/Rowel) #### Post date: [September 27, 2022, 3:37pm UTC](https://forum.moogmusic.com/t/slim-phatty-m1-big-sur/21519/3 "2022-09-27T15:37:08Z")
Hi! i solved this problem by buying the Yamaha MD-BT01. it is a Midi Bluetooth adapter. After installing the adapter the Slim Phatty received MIDI data. ---
### Author: ![domdias](https://forum.moogmusic.com/letter_avatar_proxy/v4/letter/d/a9adbd/32.png) [@domdias](https://forum.moogmusic.com/u/domdias) #### Post date: [July 19, 2023, 2:57am UTC](https://forum.moogmusic.com/t/slim-phatty-m1-big-sur/21519/4 "2023-07-19T02:57:19Z")
I am also having this issue; my little phatty stage 2 midi works perfectly find on my 2015 mac but on my m2 mac it doesn’t even show up. ---
### Author: ![domdias](https://forum.moogmusic.com/letter_avatar_proxy/v4/letter/d/a9adbd/32.png) [@domdias](https://forum.moogmusic.com/u/domdias) #### Post date: [July 22, 2023, 4:09am UTC](https://forum.moogmusic.com/t/slim-phatty-m1-big-sur/21519/5 "2023-07-22T04:09:50Z")
im also having this issue! I tried using the roland midi to usb & that did not work at all… ---
### Author: ![bubbleandsquawk](https://forum.moogmusic.com/letter_avatar_proxy/v4/letter/b/3ec8ea/32.png) [@bubbleandsquawk](https://forum.moogmusic.com/u/bubbleandsquawk) #### Post date: [February 1, 2024, 11:18am UTC](https://forum.moogmusic.com/t/slim-phatty-m1-big-sur/21519/6 "2024-02-01T11:18:13Z")
> [@](#): > > Hi! > > i solved this problem by buying the Yamaha MD-BT01. it is a Midi Bluetooth adapter. > > After installing the adapter the Slim Phatty received MIDI data. I have seen this suggested on a thread on the apple forums too, but it is not really a solution as bluetooth has too much latency.