USB link to PC doesn't work unless in Upgrade Mode

Hello everyone,
I'm very happy with my new MPC One, but I cannot connect it to a PC using an USB cable. I tried on 3 different PCs and using several USB cables without success.

On Windows Device Manager the MPC doesn't appear. However when putting the MPC One in "Upgrade Mode", it does appear as "MPC One" so the link works.
I am using the latest firmware (2.10.1) on the MPC, and did install all provided software from AkaiPro.com on the PC, including the MPC2 2.10.1 software and the drivers.

Any help would be appreciated, as I didn't find anything on the AKAI knowledge base nor on the mpc-forum about this issue.

Bruno

PS: Once in Upgrade Mode, running usbview.exe returns this output (may be interesting for some people)

Device Descriptor:
bcdUSB: 0x0200
bDeviceClass: 0x00
bDeviceSubClass: 0x00
bDeviceProtocol: 0x00
bMaxPacketSize0: 0x40 (64)
idVendor: 0x09E8 (AKAI professional M.I. Corp.)
idProduct: 0x4046
bcdDevice: 0x9999
iManufacturer: 0x01
0x0409: "Akai Professional"
iProduct: 0x02
0x0409: "MPC One"
0x0409: "MPC One"
iSerialNumber: 0x03
0x0409: "Axxxxxxxxxxxxxxxx" (NOTE: removed my serial)
bNumConfigurations: 0x01

ConnectionStatus: DeviceConnected
Current Config Value: 0x01
Device Bus Speed: High
Device Address: 0x06
Open Pipes: 2

Endpoint Descriptor:
bEndpointAddress: 0x81 IN
Transfer Type: Bulk
wMaxPacketSize: 0x0200 (512)
bInterval: 0x00

Endpoint Descriptor:
bEndpointAddress: 0x02 OUT
Transfer Type: Bulk
wMaxPacketSize: 0x0200 (512)
bInterval: 0x00

Configuration Descriptor:
wTotalLength: 0x0020
bNumInterfaces: 0x01
bConfigurationValue: 0x01
iConfiguration: 0x02
0x0409: "MPC One"
0x0409: "MPC One"
bmAttributes: 0xC0 (Bus Powered Self Powered )
MaxPower: 0x01 (2 Ma)

Interface Descriptor:
bInterfaceNumber: 0x00
bAlternateSetting: 0x00
bNumEndpoints: 0x02
bInterfaceClass: 0xFF
bInterfaceSubClass: 0x42
bInterfaceProtocol: 0x03
iInterface: 0x04
0x0409: "Android Fastboot"

Endpoint Descriptor:
bEndpointAddress: 0x81 IN
Transfer Type: Bulk
wMaxPacketSize: 0x0200 (512)
bInterval: 0x00

Endpoint Descriptor:
bEndpointAddress: 0x02 OUT
Transfer Type: Bulk
wMaxPacketSize: 0x0200 (512)
bInterval: 0x00

Unfortunately that doesn't seem to fix the issue, I did install the MPC software on my PC (very nice indeed) as a full installation with drivers, and also the displaylink drivers (which are normally used for video over USB as I do have several DisplayLink third party displays and devices which work on the same PC).

Anyway, if I didn't had installed any MPC drivers I still should have USB data information displayed by the USBView.exe utility, as well as on Windows Device Manager tool. Plugging and unplugging the MPC from the PC doesn't even trigger a sound as it does with any other USB device. (But this "sound" is played when I put the MPC in upgrade mode)

Hi Lampdog,
Yes, I did try all of these (I'm struggling with this since over two weeks and didn't post here until I had tried nearly everything I could think of, and spend hours reading forum posts and internet searches on MPC internals. I also opened a support Ticket at AkaiPro but they still didn't answer yet).

I also tried to put the MPC in diagnostic mode to test the USB hardware ports but they pass the tests. Using a USB port sniffer on the PC (Wireshark and USBMon) doesn't return any packets when I plug/unplug the MPC. The only way to see the MPC is when I put it on Upgrade mode when it is seen as "Android Fastboot" from the PC. I'm currently evaluating a firmware rollback to 2.9.1 to see if it changes something.

Very bad news, I tried to rollback and completely bricked the MPC One.

Rollback was done with USB cable to the PC and the MPC in upgrade mode. I started MPC-2.9.0-Update Win.exe that I found on akaipro.com website, the upgrade went "fine" (the program displayed that the upgrade was downloaded and then "Done"), but at reboot, afterdisplaying the MPC logo for 20 seconds, the displays goes to a black screen and nothing happens.

I tried all the key combinations I found on the forum but none of them seem to change the issue, I still have a black screen after 20 seconds, and even the Diagnostic mode doesn't start.
[BANK C] + [FULL LEVEL] + [ERASE] + POWER ON
[BANK C] + [FULL LEVEL] + [SHIFT] + POWER ON
[Bank A] + [PLAY] + [PLAY START] + POWER ON
[OVERDUB] +[STOP] + [PLAY] + [PLAY START] + POWER ON

Since I bought it a month ago, it is still under warranty but should I try anything else or should I ask AKAI for a replacement unit?

Thank you, I'll do that. I hope Akai support will be fast to replace the unit.

Lampdog wrote:Replace the unit.

Everything you’ve done should have normally worked it seems.

My last try was to downgrade from 10.1 to 9, but although the update seemed to work, the AKAI didn't start properly (black screen at startup after the MPC Logo, and no way to reinit).

The unit was sent back, and I received it today (my same unit), working again, with a repair note stating they were able to reflash the firmware back to 10.1. So I'm happy again.

Anyway, I still cannot see the MPC from the PC USB port unless in Upgrade mode. So I tend to belive this is probably normal, anyway.

Can someone owning an MPC ONE confirm that when plugging an USB cable from the MPC to the PC, the PC should detect it? At least for controler mode!

Thank you!

bkerouan wrote:
Can someone owning an MPC ONE confirm that when plugging an USB cable from the MPC to the PC, the PC should detect it? At least for controler mode!

Thank you!

Either I'm missing the point .... Or of coarse is does, how else would we be able to use controller mode?

I know you've said you've installed the drivers, but humour me, you wouldn't be the first to be convinced they've installed correctly...... Only to find drivers not installed.

Re-run the MPC software installer, first window select the One as hardware unit, make sure you select the correct hardware, as different drivers for different MPC's, next window you'll see the MPC software with a big tick next to it, immediately under is the driver, which for some reason doesn't seem to install alongside the main install.

I take it you've tried different usb leads? And assuming you've connected to the correct usb port on MPC (the square one).

bkerouan wrote:and also the displaylink drivers

Display drivers not needed for the MPC One, only for the MPC touch, but it shouldn't cause any problems, I have both installed as I have both MPCs.

If you've tried this on 3 different PCs already then perhaps it is the MPC itself, or user error. So to confirm, you are not able to use the MPC One in controller mode at all - i.e. with the MPC Software running and the MPC One specifically set to 'controller mode' via the 'MPC Chip' icon in MENU, with a USB cable plugged into the MPC's square USB B port and connected to a USB A port on your PC running Windows 10? Does it just show the 'Looking for Computer' screen on the MPC One?

And without the MPC Software running, and the MPC One specifically set to 'controller mode' and connected via USB, the MPC should appear in your computer as an available audio and MIDI device, and if you have an SD Card or USB drive connected to the MPC One, that disk should appear as a removable drive in your PC. This is what happens on a Mac at least.

BTW, please confirm what version of Windows you are running. Are these USB 2 or 3 cables and ports? Have you tried connecting via a USB 2 hub (can sometimes fix USB connection issues).

Having same or similar issue.

2.14 firmware

Purchased "open box" MPC X SE from Guitar Center. Unit was apparently registered to prior "owner". ("Open box" or Used"?)

Got registered in my name with Akai. (X SE still shows origional owner). Installed software. Don't recall drivers question. Software is linked to my account. (Streams purchased and activated OK).

Controller mode does not connect to PC. Windows 10 laptop does not see X SE USB connection. I think it sees thumb drive in X as it says it would be faster if connected to USB 3.0 - all Toshiba ports are 3.0!

Waiting to hear back from Akai Level 2 Tech...