# Firmware Lifecycle
Note
To upgrade firmware from version 1.6 to version 1.9.4 first you need to upgrade it to version 1.6.2
# Change Log
# Bug Fixes
- Minor improvements
# Compatibility Matrix
Please carefully check the compatibility matrix for the 1.9.4 firmware version with the previous version.
Legend:
- C - fully compatible;
- NC - not compatible;
- PC - partly compatible, check additional notes.
| 1.6 | 1.6.2 | 1.9.2 | 1.9.3 | |
|---|---|---|---|---|
| OTA Upgradable | NC | C | C | C |
| Rollback | NC | NC | NC | NC |