Just an FYI for those experiencing ghost inputs etc on their Hyperion 3, version 2.21 is out. I haven't tested it yet

https://drive.google.com/drive/folders/1oXemMRNtQ989YcQoF5_pNcuFYrojFBLZ

Firmware 2.19 (what I started on)

Right away in Bluetooth mode things felt really off:

• ZR was also triggering R
• ZL was also triggering L
• Random ghost inputs (R, L, Y, etc.)
• Basically unusable in Bluetooth
• Happened immediately after turning it on

Turning off rumble helped a little, but didn’t fix it. Weirdly, just opening the app would temporarily stop everything.

At that point it didn’t feel like normal “drift” — it felt like the whole input system was bugged.

Downgrading to 2.14

After digging around (firmware isn’t easy to find), I downgraded to 2.14.

That made a huge difference:

• No more double-input issue at startup
• Bluetooth actually usable again
• Overall just felt normal

BUT… it’s not perfect

After playing for a while (like 30–60 minutes+), I started noticing:

• Controller feels a little “off”
• Then eventually I’ll get ghost input (usually the R trigger)

The important part though:

• Power cycling fixes it instantly
• Opening the app fixes it instantly

So it’s not constant—it kind of builds up over time.

The interesting part

Opening the app fixes everything immediately.

That makes me think:

• It’s some kind of calibration/state issue
• Not hardware
• The controller just isn’t maintaining that state properly over time

Also worth noting:

• Handheld mode works perfectly, even after hours
• This seems mostly like a Bluetooth issue

My takeaway

• 2.19 = honestly broken (at least for me in Bluetooth)
• 2.14 = way better, but still not fully stable

So downgrading helps a lot, but I wouldn’t call it a full fix.

Biggest complaint

Firmware management is rough:

• Versions aren’t clearly on the official site
• I only found them through a random Google Drive link
• No way to downgrade in the app

That’s kind of a big deal because:

• Most people will just think their controller is bad
• Not everyone has a Windows PC to mess with firmware

Final thoughts

The controller itself actually feels really good. Hardware-wise I like it a lot.

But right now it feels like:

• Great hardware
• Firmware still needs work

Curious if anyone else is seeing the same thing, especially in Bluetooth mode. What firmware are you on?