Where Does OpenTX Store Models and Settings?
OpenTX keeps radio models and settings on the transmitter SD card with Companion backups on the computer. Back up the card before firmware updates.
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OpenTX splits radio data between card and computer. Model setups, mixes, and global settings live on the transmitter SD card in fixed folders. Companion on the PC reads and writes the same files for comfortable editing and versioned backups.
Firmware flashes to internal memory while the card holds everything personal. That division makes card backups the whole migration story. Mismatched firmware and model versions cause the classic empty-model-list boot, fixed by restoring the matching pair.
Where OpenTX stores this, by platform
[Radio SD card]\MODELS\
Models and settings on the SD card; Companion backups on PC. Back up before firmware updates. Match firmware and model versions to avoid empty lists.
Frequently asked questions
How do I update OpenTX safely?
Read models and settings into Companion over USB, then save the backup file with a dated name. Flash the firmware, verify boot, and write models back. Keep the pre-update backup until the first successful flying session.
Can I share models between radios?
Yes by copying model files between cards with matching firmware families. Rebind receivers on the new radio afterward. Sound packs and themes copy the same way; check paths when voices go silent.
Notice an outdated path? Let us know.