About SIG BDX
The KILO BDX rangefinders use Applied Ballistics and Bluetooth(R) to illuminate the exact holdover dot in SIERRA3BDX riflescopes. For the most accurate and ethical shot, just Connect The Dot™. - DOWNLOAD: Download the ap
The KILO BDX rangefinders use Applied Ballistics and Bluetooth® to illuminate the exact holdover dot in SIERRA3BDX riflescopes.
For the most accurate and ethical shot, just Connect The Dot™.
- DOWNLOAD: Download the app
- SYNC: Sync the app with your rangefinder
- BOND: Use the app to bond the rangefinder with the riflescope
- RANGE: Press the RANGE button to measure the distance of your target
- POWER SELECTOR RING: When the SIERRA3BDX riflescope is actively paired with a KILO BDX rangefinder, the blue LED on the power selector ring will be illuminated solid blue. This Blue LED will flash quickly 8X for one second whenever the riflescope has received a new holdover reticle update from the rangefinder. The BDX system works out to 800 yards with 1 MOA of accuracy
- CONNECT THE DOT™: It’s time for hunting. Once the riflescope is turned on, range the target and the new hold is lit up out to 800 yards
Previous Versions
Here you can find the changelog of SIG BDX since it was posted on our website on 2020-09-24 22:54:09.
The latest version is 463 and it was updated on 2026-06-29 19:40:39. See below the changes in each version.
SIG BDX version 463
Updated At: 2026-04-03
Changes: Added thumbnails, a previously downloaded indicator, and the ability to delete ECHO 6 and ECHO MV, RV, and RQ photos and videos. Fixed ECHO 6 WiFi connection problems. And added new ECHO RQ and RV firmware files.
SIG BDX version 462
Updated At: 2026-03-12
Changes: Firmware update for the ECHO RV35, RV50, and RQ35
SIG BDX version 461
Updated At: 2026-02-04
Changes: ECHO MV50 firmware update
SIG BDX version 459
Updated At: 2025-12-23
Changes: This version introduces support for the ECHORQ35, ECHORV35, and ECHORV50-LRF. It also makes the ECHOMV50-LRF more convenient to use with the app by utilizing bluetooth for many of the features that previously required WiFi.
SIG BDX version 454
Updated At: 2025-10-30
Changes: Firmware update for the KILO6K HDX
SIG BDX version 453
Updated At: 2025-10-07
Changes: This version introduces support for the BRAVO6T scope as well as the ECHOMV50-LRF.
SIG BDX version 449
Updated At: 2025-08-27
Changes: Minor bug fixes and improvements
SIG BDX version 439
Updated At: 2025-02-11
Changes: The latest app update includes new firmware for the Echo SV sights.
SIG BDX version 436
Updated At: 2025-01-17
Changes: Updated Firmware for the ECHO Sight and Clip-on Thermal Devices
SIG BDX version 430
Updated At: 2024-11-04
Changes: New firmware for the Echo 6 sight
Disclaimer
Official Google Play Link
We do not host SIG BDX on our servers. We did not scan it for viruses, adware, spyware or other type of malware. This app is hosted by Google and passed their terms and conditions to be listed there. We recommend caution when installing it.
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