ROG Kunai 3 USB Mode random disconnect!

rogeriskirarogeriskira Level 2
edited April 2021 in ROG Phone 3

Please tell us some basic information before asking for help:

  1. Model Name: ROG Phone 3
  2. Firmware Version: .99
  3. Rooted or not: Not
  4. Frequency of Occurrence: During Gaming with ROG Kunais 3
  5. APP Name & APP Version (If your issue relates to the app): Still testing but noticed while playing Rockman X Dive

In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.


I paired my Kunai's with bluetooth and this doesn't seem to happen on bluetooth mode but while testing USB mode with the bumper on my ROG Phone 3. I noticed that randomly while playing Rockman X Dive my controller will disconnect (Green LED turns off and turns back on). When I first connected the controller the update firmware box appeared and I clicked update and it quickly disappeared not letting me know if everything went well. Then it asked for another update which I did and the same thing happened. SO not sure the firmware version or how to check.

I noticed after rebooting it didn't happen for a while but it did happen again. I checked the physical connection and it is really tight and secure. It just seemed to happen randomly.



  • Yep. It happen to my kunai 3 too.. a little fix is welcomed. Firmware seems updated just for the left controller. The right controller still stuck with the old firmware.

  • rogeriskirarogeriskira Level 2
    edited December 2020

    Oh so it's not a defect? Thats good. I'm glad I'm not the only one. After checking my firmware on my controllers I can confirm the Left has 3.3.3 and the right has 3.1.0 while bluetooth has 3.0.8) [They also show up as ROG Kunai Gamepad 2 in system hardware information]

    Please assist ASUS as this is a problem. Can't be a "pro gamer" if the controller disconnects randomly during play.

  • Yeah i hope the dev working on it.

    Oh for the controller name. I think it's not a problem because technically, kunai gamepad just released 2 model so far. The first one is for rog 2 and the second one is for rog 3. The first rog phone gamepad has different name i believe. It's called gamevice controller.

  • Oh I guess that makes sense for the name.

    As for my USB mode randomly disconnecting I feel to get the controllers to act properly a reboot seems to help temporarily. The issue does come back. Which then this leads me to believe this is 100% a software issue. Please review this ASUS as this is unacceptable for a controller this expensive. I paid for USB mode I want to use it without worrying about random disconnects.

  • Same problem here. I was excited for the kunai then got greeted by this issue.

  • Can you tell me how to check the kunai's firmware? I got some problems too for my kunai

  • @rogeriskira @ace.crdv @Ogghy

    Can you help us out with device logs for this one? I'm sending you instructions via PM!

  • Go to Settings>System>About Phone>Hardware Information (Do this while the controller is connected)

  • I will give you logs later today with video recording. Hopefully this will help the issue get pushed along. Thank you.

  • My left kunai has v3.3.3 firmware and my right kunai has vff.ff.ff , is it because the firmware that make the right kunai doesn't work? So we only wait for the update?

  • What happened to my kunai? My right kunai has vff.ff.ff firmware

  • Same here random disconnect playing slamdunk

  • It's the same exact problem I am also having. I am hoping more and more people would come here to complain, as I found a lot of people facing the same issue on Asus Armory app.

    Come on devs... someone on development team should try updating a phone so they can check it more closely.

  • It's so sad that this problem have occurred for 2 weeks, I can't play with my kunai since that update, my right controller can't be used anymore

  • got the same problem,

    game genshin impact

  • Random disconnecting is happening for me as well on a Rog Phone 2. Happens with all games and even on the home screen

  • I originally thought it's because I was using the aerocooler and the kunai on usb mode at the same time. I thought because they were drawing power at the same time so they were disconnecting. But I was using the kunai recently without the aerocooler and the problem still persist.

  • Same thing happened to me. I just got my Kunai 3 2 days ago, and noticed in Genshin Impact I'd lose connection while in USB mode. Also in Bluetooth mode, only the left controller works for genshin impact too.

  • I got scared thinking I got a faulty unit. It the same thing is happening to me

  • Yes, I also have the same issue when using kunai 2 play Rockman x dive. The kunai 3 randomly disconnected and reconnect back which is annoying especially during PVP.

This discussion has been closed.