Introduction to Furious FPV True-D Firmware

• Official Support: Furious FPV no longer provides active support or new firmware for the True-D. Their focus shifted to the "True-D X" (a newer module) and other products.
• Community Support: Old firmware files (v3.0 typically) can still be found on RCGroups threads or archived Furious FPV Google Drive links, but no official centralized repository exists on the current Furious FPV website.

For most pilots using the True-D V3.0 through V4.0, the process is straightforward but requires a specific utility tool. 1. Preparation

How to Update Your Furious FPV True-D Firmware

Updating is straightforward, but requires patience. Do not interrupt the power during flashing.

Heating Issues

While primarily a hardware issue, the firmware did not manage power efficiently. The module ran hot, and as the internal temperature rose, the firmware performance (specifically channel switching speed) could degrade.

Step-by-Step:

1. | Hardware Version | Distinguishing Feature | Common Firmware | | :--- | :--- | :--- | | True-D 1.0 (Original) | No SD card slot. Clunky UI. | v1.4, v1.5, Pirx | | True-D 2.0 | Micro SD card slot on the top edge. Faster processor. | v2.0, v2.1, v2.5 | | True-D 3.0 / X | Modified button layout. Designed for HDO2 bay. | v3.0, Pirx (X mod) |

   • Remove the module from your goggles.
   • Connect the module to your PC via USB-C.
   • Troubleshooting: If your PC doesn't recognize it, you may need to install STM32 Virtual COM Port drivers. Some modules require you to hold the encoder button while plugging in the USB.