During the update, after the reboot, the screen stays black.

Engine DJ Hardware Standalone Controllers
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1

Hello, I performed an online update on my P4+. I upgraded from 4.3.4 to 5.0.1. During the update, after the reboot, the screen stays black. At startup, I can see the test screen for all the buttons/LEDs… then the central JOG screen keeps cycling from a white star to a blue one. I let it run for 15 minutes, but nothing changed. I unplugged my P4+ overnight. This morning it’s the same… Do you have a solution? Thanks in advance. Right in the middle of a busy period… this is a real headache!!

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2

First thing to do is contact support and create a ticket there.

Can you get into computer update mode?

For P4+ I think it’s: Right deck: SHIFT + EJECT > Power ON

Use the updater using a computer and USB cable.

3

Thanks for your quick reply. I just tried it, but the USB doesn’t seem to be recognized.

4

[quote=“Reese, post:2, topic:69275”] Use the updater using a computer and USB cable. [/quote]

Not a USB stick but a laptop with Denon firmware ugrade tool installed and a usb cable connected to the device

5

When I connect the P4+ to my PC using the USB cable, click “START UPDATE,” and turn on the P4+ using SHIFT + EJECT, my PC says the P4+ isn’t connected. We’re good on: 1- Clicking “Start Update” on the PC 2- Turning on the P4+ Is that right?

6

Well, you should see the Prime4+ in device manager at least. If not, maybe install the driver from here: https://cdn.inmusicbrands.com/denondj/Prime4/Install-Denon-DJ-PRIME-4-1_0_2.exe

After that, usually start the P4+ in update mode and then start the updater program.

7

Driver installed, PC rebooted, and USB cable connected How can I be sure the P4+ is in Update mode without a display? How can I tell that the update is in progress on the P4+ without a display ?

8

If you don’t have a main display, even while powering ON to update mode, than there’s nothing we as a community can do.

9

Thanks anyway for your support. I’m going to send it in for repair. Have a good evening. Best regards,