Is Your Firmware Up to Date? — 2026 Firmware Recap

Two firmware updates went out this year. If you've got a RattlerV3, AdderV2, Evolver1280, or a Spectrum 4K LRF, make sure you've got the latest update.

The update is free, it runs through the AGM Connect app, and it takes a few minutes. Easier to do now than the night before a hunt.

Check your firmware in AGM Connect

Before you start, write down your zero coordinates and ballistic data for every profile you use. You shouldn't lose them. Write them down anyway.

1. Open AGM Connect and tap the profile icon in the top left corner.
2. You'll see the optics you've connected before. If yours isn't on the list, turn on the Wi-Fi hotspot on the optic and connect it to the app.
3. Tap your model name. That screen shows your model, serial number, current firmware version, and FPGA version.
4. Scroll to the bottom and tap Check for Update.
5. If an update is available, the app will tell you and walk you through it. 

What shipped in 2026

V5.5.148 — February

Rattler V3 · Adder V2 · Evolver LRF 1280

• Image Boost 4.0 with Auto Scene Mode (Image Boost 3.0 optimization on Evolver)
• Reticle opacity control and thinner precision reticles
• Ballistic aim point improvements and pitch compensation
• Custom LRF box styles and colors
• Noise reduction and image enhancements
• New device security features

V5.5.156 — Spring **Latest Update**

Rattler V3 · Adder V2 · Evolver · Spectrum 4K LRF

• LRF + Capture now toggles the ballistic calculator on and off from the main view — no menu digging
• PIP window follows the BDC impact point when ballistic calculation is on, so your solution stops sliding out of frame at distance
• “Opacity” is now labeled Reticle Brightness
• Spectrum 4K LRF joins the lineup with rangefinding reticle styles and colors, and reticle opacity control
• Assorted fixes to rangefinding display and AGM Connect integration

You only need the newest one. V5.5.156 includes everything in V5.5.148. Skip straight to it.

Questions

Contact support with your model, serial number, and current firmware version. Don't troubleshoot a scope you're hunting with this week.

support@agmglobalvision.com