> For the complete documentation index, see [llms.txt](https://docs.powerdrives.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.powerdrives.net/downloads/firmware-releases/uhv-and-hv-pro-firmware.md).

# UHV and HV Pro Firmware

### 2.1.2 - 2nd March 2023 - Latest

{% file src="/files/5kVVa5nljQkoPeQE6f3a" %}
UHV and HVP Firmware Version 2.1.2
{% endfile %}

#### Changes

* Start-up phase current limits based on motor start power and size selection.

### 2.1.1 - 15th February 2023

{% file src="/files/g56SK759Xsb4keP2oL42" %}
UHV and HVP Firmware Version 2.1.1
{% endfile %}

#### Changes

* Point of AFW engagement increased.
* UART current telemetry scaling restored.

### 2.1.0 - 20th December 2022

{% file src="/files/6bwb4OcpwJXVrBUpsirX" %}
UHV and HVP Firmware Version 2.1.0
{% endfile %}

#### Changes

* Over-voltage calculations are performed dynamically rather than solely on unit boot.
* Current sensing accuracy increased, and further filtering applied.
* Over-current protection optimisations.

### 2.0.5 - 1st September 2021

{% file src="/files/-MiV4MvCr-VLSlYmFYx0" %}
UHV and HVP Firmware Version 2.0.5 - Legacy
{% endfile %}

#### Changes

* Increased filtering on over-voltage response, which caused false positives with some setups.

### 2.0.4 - 3rd August 2021

{% file src="/files/-MiV4CUPj-y5RcDRTFz5" %}
UHV and HVP Firmware Version 2.0.4 - Legacy
{% endfile %}

#### Changes

* Optimisations to logging, including onboard speed.
* Increased dithering for frequencies on PWM output, which improves throttle linearity.

### 2.0.3 - 29th June 2021

{% file src="/files/-MdL5nvE\_6Lbg\_MFVJ1o" %}
UHV and HVP Firmware Version 2.0.3 - Legacy
{% endfile %}

#### Changes

* Stability improvements to Reversible mode over different dead-zones

### 2.0.2 - 24th March 2021

{% file src="/files/-MaSgadOez7D4aZVyKES" %}
UHV and HVP Firmware Version 2.0.2 - Legacy
{% endfile %}

#### Changes

* **Non-Beta** release on version 2 configuration platform.
* Further start-up protection mechanisms added.
* Optimisations to various drive modes.

### 2.0.1 - 12th March 2021

{% file src="/files/-MaSgS\_iNbKyccNwsYcI" %}
UHV and HVP Firmware Version 2.0.1 - Legacy
{% endfile %}

#### Changes

* Beta firmware.
* Improvements to UART telemetry output.
* Status flags added to UART output.

### 2.0.0 - 27th January 2021

{% file src="/files/-MaSgK6elJYJFxh4hcC7" %}
UHV and HVP Firmware Version 2.0.0 - Legacy
{% endfile %}

#### Changes

* Initial release of version 2 firmware, for Beta testing.
* Added a new logging driver for graphing of onboard data.
* Added status flags to logging data.