Downloads

Divimath Downloads

Download manuals, firmware, and recovery files for Divimath NDAA products. Verify the product and hardware revision before installing any firmware.

Important Notice: These firmware files are intended only for Divimath NDAA products. Installing them on non-NDAA devices may cause the device to become non-functional. Divimath Goggle Rev1 and Rev2 firmware are not interchangeable. Confirm your hardware revision before installing firmware.

Manuals

Divimath Goggle

Identify your hardware revision before downloading:
  • Rev2 hardware: Has a USB-C port on the bottom of the goggle.
  • Rev1 hardware: Does not have a USB-C port on the bottom.

Divimath Goggle Rev2 Hardware

The following files are only for Divimath Goggle Rev2 hardware. Rev2 units have a USB-C port on the bottom.

Firmware Update - v1.3.17

Use this file for a normal firmware update on a functioning Divimath Goggle Rev2.

Download Divimath Goggle Rev2 Firmware - v1.3.17

SHA-256:
69758A18894ED95B0741D636485C31C680BBA6CB50C8330C72FDFA43A1F8FC9F

Recovery Image - 2026-07-20

Use the recovery image only when performing a full system recovery. This is a compressed disk image and is not installed through the normal firmware update process.

Download Divimath Goggle Rev2 Recovery Instructions

Download Divimath Goggle Rev2 Recovery Image - 2026-07-20

SHA-256:
F2845ED085C82D7BFA9940ACB0C6525F08ECC04DF79270372337981E857594D2

Divimath Goggle Rev1 Hardware

The following files are only for original Divimath Goggle Rev1 hardware. Rev1 units do not have a USB-C port on the bottom.

Firmware Update - Rev 2025-11-25

Download Divimath Goggle Rev1 Firmware - Rev 2025-11-25

SHA-256:
1F8B478A7EA921254EB53609A1874A8816A8D2CE22A247F2A7D085A7739E774D

Emergency Recovery Files

Use these files only when recovering a non-functional Divimath Goggle Rev1.

Download Divimath Goggle Rev1 Emergency Recovery Files

SHA-256:
4E848857F40FE05F7049D9DB699F394ABA8642DB5F197954D103513A75DB9B8E

▸ Divimath Goggle Rev1 Release Notes and Previous Firmware

Rev 2025-11-25

  • Added support for HDMI VTX.
  • Added support for 1080p24 video input from the HDMI VTX.

Rev 2025-09-17

Download Divimath Goggle Rev1 Firmware - Rev 2025-09-17

SHA-256:
DFE17D72151249F05DD844D6CBC8B1C6A392FDF83CB9975648B3E3061F3DBFAB

  • Improved reliability and security.
  • Added additional encryption modes.

Divimath Monitor

Latest Firmware - v1.4.3 - 2026-07-09

Download Divimath Monitor Firmware - v1.4.3 - 2026-07-09

SHA-256:
40CE380B9ED648888C692F2A79384C372ADF904DEED9E148E134A53C42EF927A

▸ What’s New in Divimath Monitor v1.4.3
  • AV-in can now display static or otherwise unstable signals instead of defaulting to a blank screen.
  • Added analog support for additional bands M, H, Y, and T, covering 4.9 GHz to 6.0 GHz.
  • Added selectable Digital Wide, Digital Narrow, and Analog modes.
  • Short press the third button to switch modes. The monitor remembers the selected mode after reboot.
  • Analog mode now displays static when no signal is present instead of showing a blank screen.
  • Digital and Analog modes now support auto scan and lock onto valid signals faster.
  • RF Auto mode does not support auto scan.
  • Long press the third button to switch the display aspect ratio between 4:3 and 16:9.
  • Added a black standby screen for night operations.
  • Added UART control for LCD backlight and red-tint mode. Contact ndaa@DivimathInc.com for details.
  • Added Loop Scan mode for continuously detecting nearby analog video signals.
  • Added button control for red-tint mode, which helps preserve the eye's natural night vision. Lower the screen brightness to the minimum setting to activate red-tint mode.
▸ Divimath Monitor Scan Controls
  • One-time scan: Long press the left button. The scan exits when a valid signal is detected. If no valid signal is detected, it exits after one complete scan cycle.
  • Loop Scan: Long press the right button. When a valid channel is detected, video is displayed. If the signal is lost, scanning automatically resumes. Long press the right button again to exit Loop Scan.

Divimath GroundLink

Latest Firmware - v0.7.0 - 2026-07-02

Download Divimath GroundLink Firmware - v0.7.0 - 2026-07-02

SHA-256:
9D6314D25A3DB1381E337444565F6C996439F57E3FBDF3C15100613C5ECEC043

▸ Divimath GroundLink Firmware Release Notes

v0.7.0

  • Added support for reading and configuring all GroundLink settings through the PC application.

v0.6.0

  • Added analog support for 88 channels across bands A, B, E, F, R, L, M, H, Y, T, and the custom frequency band.
  • Added a custom analog frequency band that can be configured using the GroundLink PC application.
  • Added GroundLink channel control using an ELRS receiver channel value. The assigned ELRS channel can be configured using the GroundLink PC application.
  • Corrected the analog L1 frequency.

USB Serial API

The Divimath GroundLink USB Serial API allows an external application to change channels and configure GroundLink settings through a USB serial connection using the USB-C port.

Download Divimath GroundLink USB Serial API

Divimath VTX

Latest Firmware - Rev 2025-11-25

Download Divimath VTX Firmware - Rev 2025-11-25

SHA-256:
02EB7FD7F69B1EBC72A94660FB114C0597775B757F2E4BDDADFB6135CFDF1872

▸ What’s New in Divimath VTX Rev 2025-11-25
  • Added support for HDMI VTX.
  • Fixed an issue where using the stick command for 0 mW mode while Broadcast was set to Public caused the VTX to power on in Encrypted mode instead of the selected Public mode.
  • Fixed an ArduPilot integration issue where the flight controller could change the VTX channel and power when it should not.
  • Fixed an ArduPlane issue where stick commands did not open the VTX menu.
▸ Previous Divimath VTX Firmware

Rev 2025-09-17

Download Divimath VTX Firmware - Rev 2025-09-17

SHA-256:
CDF134E041DDE1264AEC8DB55F6CBB09ABC3095F007FEED4A88098FDBFA6CAC4

  • Improved reliability and security.
  • Added additional encryption modes.
Verify a Download Using SHA-256

SHA-256 hashes are provided so you can verify that a downloaded file is complete and has not been modified.

On Windows, open PowerShell and run: 

Get-FileHash "C:\Path\To\Downloaded\File" -Algorithm SHA256

Compare the displayed hash with the SHA-256 value shown next to the download.

Proprietary ASICs

Divimath, Inc. stands at the forefront of FPV innovation, delivering products with the lowest latency in the world. This achievement is powered by Divimath’s proprietary ASICs, the result of years of intensive research and development and an investment of tens of millions of U.S. dollars. Unlike companies that rely on off-the-shelf solutions, Divimath designs and fully owns its custom chips, ensuring unmatched performance, reliability, and control over the technology stack.

  • Wireless video transceiver (BB)
    DM5680

  • 5~6GHz RF transmitter
    DM6300

  • 5~6GHz RF Receiver
    DM6302

  • Dual Channel Video Processor
    DM1618

  • Quad Channel Video Processor
    DM1675

FAQ

Q: How do Divimath NDAA-compliant products differ from HDZero products?

A: Divimath NDAA-compliant products are similar to the proven HDZero digital video system but are built specifically to meet U.S. government sourcing and compliance requirements. Divimath NDAA-compliant products add a key feature: encrypted digital video transmission. This encryption protects against unauthorized viewing and is exclusive to the NDAA-compliant product line. While Divimath NDAA products remain compatible with HDZero receivers when encryption is disabled, encrypted video streams can only be viewed using Divimath NDAA-compliant receivers. HDZero receivers cannot decode encrypted video from Divimath NDAA transmitters.

Q: What does NDAA compliance mean?

A: NDAA compliance ensures that our products meet U.S. government regulations regarding sourcing and manufacturing. Divimath's NDAA-compliant products are free from restricted components and are suitable for use in federal, defense, and other sensitive applications requiring secure supply chains.

Q: Where are Divimath products made?

A: Divimath products are manufactured in Thailand and owned by Divimath, Inc., a U.S.-based company. This provides transparency and security in our supply chain while supporting domestic engineering and support services.

Q: How does Divimath’s video system compare to analog?

A: Unlike analog systems, Divimath’s digital video technology eliminates image warping and color shifting, offering consistently clear visuals. Our system also offers similar range and predictable signal recovery, with none of the stutters or freezes common in other digital systems.

Q: What is the video latency of Divimath’s system?

A: Divimath’s video transmission offers industry-leading, sub-3ms glass-to-glass latency with no frame-to-frame variation—far lower than typical digital systems, which can have 30-200ms of delay.

Q: Can Divimath systems work with existing analog setups?

A: Yes. Our video systems include a built-in analog video receiver and HDMI input for seamless integration with existing infrastructure, making upgrades simple and cost-effective.

Q: How does Divimath's digital video encryption work?

Divimath digital link is encrypted using AES256.
Encryption occurs at the physical layer which means:

  • It is almost impossible to hack the link without a Divimath receiver
  • A Divimath receiver without correct password is not able to receive video

Encryption can be disabled if desired (e.g. at racing events).