> 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.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.powerdrives.net/downloads/firmware-releases/uhv-and-hv-pro-firmware.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.