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Legit Avionics | MGL Avionics US Dealer
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Legit Avionics | MGL Avionics US Dealer
Please allow extra days for delivery and support. Order and support inquiry volume are currently high due to AirVenture 2026.
Please allow extra days for delivery and support. Order and support inquiry volume are currently high due to AirVenture 2026.
Upgrade your existing MGL G2 or G3 iEFIS (Explorer or Challenger series) to the modern G4 iEFIS platform.
This upgrade adds powerful customization and usability features while keeping your existing installation.
We can also upgrade your internal memory card to a high quality SLC NAND memory card for the highest possible reliability and resistance to data corruption- this is recommended, but not currently possible due to the global NAND chip shortage.
For more information on using the built-in screen designer, see the document here
If your system contains an iBOX, your system is an iEFIS "Full" system.
If your system doe not use an iBOX and has an internal AHRS, it is a "Lite" system.
After purchase, you will receive an email with shipping instructions for your EFIS unit. We will try to send you an email letting you know if we have upgrade kits in stock and ready, otherwise, you may want to wait to send the panel in to minimize down time. If upgrade kits are in stock the upgrade should be turned around in just a few days. As always, if you have any questions just reach out.

iEFIS G4 Upgrade
iEFIS Lite / Basic Memory

