1 ![](https://quadmeup.com/assets/winged-inav.png)
3 ## Hello and welcome to INAV 4.1 "Red Kite"
5 Please carefully read all of this document for the best possible experience and safety.
7 Get in touch with other pilots, share experiences, suggestions and ask for help on:
12 <td><img width="48" src="https://discord.com/assets/f9bb9c4af2b9c32a2c5ee0014661546d.png"></td>
13 <td><a href="https://discord.gg/peg2hhbYwN" target="_blank">INAV Discord Server</a></td>
16 <td><img src="https://upload.wikimedia.org/wikipedia/commons/c/cd/Facebook_logo_%28square%29.png" width="48"></td>
17 <td><a href="https://www.facebook.com/groups/INAVOfficial">INAV Official on Facebook</a></td>
22 Please continue to support developers, for free, by checking out from the following stores after having clicked on the following links:
27 <td><img src="https://lh3.googleusercontent.com/TiHXyUiZ2COk7OmceBgo1qeRN2APAjWL5qUydGc-U3LqkJb3n13EhYEJ8Dpz_IACNHU" width="55"></td>
28 <td><a href="https://inavflight.com/shop/u/bg">Support us on Banggood</a></td>
33 Your contribution from the past month has been very welcome! Thanks!
35 Tested and suggested hardware can be found [here](https://github.com/iNavFlight/inav/wiki/Welcome-to-INAV,-useful-links-and-products)
39 > This release is fully supported only with [INAV Configurator 4.1](https://github.com/iNavFlight/inav-configurator/releases). When an older version of Configurator is used, the OSD tab will not work!
41 # Upgrading from a previous release
43 ## Upgrading from INAV 4.0
45 1. Use INAV Configurator 4.0 CLI to make a `diff` of the current configuration
46 2. Store the `diff` output
47 3. Download INAV Configurator 4.1 and flash INAV 4.1 firmware with `FULL CHIP ERASE`
48 4. Connect with INAV Configurator and restore the `diff` with the CLI tab
50 ## Upgrading from older versions
52 Please follow the instructions on [this](https://github.com/iNavFlight/inav/wiki/Upgrading-from-an-older-version-of-INAV-to-the-current-version) page.
56 1. HDzero OSD canvas mode support
57 1. SD card support on Kakute H7 flight controllers
58 1. Improved Matrix filter tracks now 3 gyro noise peaks instead of only 1
59 1. Lowered Airmode threshold to improve Airmode handling on powerful multirotors
60 1. Fixed RTH Sanity Checking
61 1. RTH MAX mode uses RTH Altitude. If not 0, MAX mode will use RTH Altitude as the minimum altitude
65 The full list of changes is available [here](https://github.com/iNavFlight/inav/pulls?q=is%3Apr+milestone%3A4.1+is%3Aclosed)
68 * @jimsynz made their first contribution in https://github.com/iNavFlight/inav/pull/6981
69 * @jeffhendrix made their first contribution in https://github.com/iNavFlight/inav/pull/7587
70 * @serg-2 made their first contribution in https://github.com/iNavFlight/inav/pull/7655
71 * @geoffsim made their first contribution in https://github.com/iNavFlight/inav/pull/7668