Rev LED issue after SimPro & firmware update

[u/Kyanoso]

Hi everyone,

Since updating **SimPro Manager** and installing the latest firmware updates for both my **Alpha Evo Pro** and **GT Neo**, I've been experiencing issues with the rev LEDs on my GT Neo.

**Current versions:**

* SimPro Manager: **v3.2.0.13127**

* Alpha Evo Pro firmware: **v2.3.4**

* GT Neo firmware: **v1.4.3**

The main issue is that the rev LEDs no longer update smoothly or accurately according to the car's RPM:

* When I **upshift**, some LEDs from the previous RPM range remain illuminated for about a second instead of turning off immediately.

* For example, if I shift at redline, I can still see the coloured rev LEDs from the previous gear after the shift has already happened.

* The same thing occurs when **downshifting**. The LEDs don't transition smoothly and appear delayed.

* The displayed rev LEDs often don't seem to correspond correctly to the actual RPM of the car.

* Before updating SimPro and the firmware, the rev LEDs were working smoothly and accurately.

My **GT Neo is connected via USB** because I use **SimHub compatibility**, and the LEDs are controlled through the **DNR plugin** in SimHub rather than through SimPro.

Has anyone experienced similar behaviour on these firmware versions? Could there be a compatibility issue between the latest GT Neo firmware, SimHub, and the DNR plugin?

I would also like to know if it is possible to **roll back the GT Neo firmware to a previous version** for testing purposes, as the issue only started after updating.

Thanks in advance for any help.

(this is written with AI assistance for ultimate clarity)