Updated at 2026-04-10

JIEZI V1.5.0 firmware changes are as follows:

1. Fixed an issue of relatively low output volume at the maximum level.

2. Fixed an issue where the EQ frequency response curve deviated from the target settings.

3. Other system optimizations.

JIEZI V1.5.0 firmware download link and update instruction: Click here

Updated at 2026-03-10

JIEZI V1.4.0 firmware changes are as follows:

1. Fixed the popping sound issue when setting high shelf in custom EQ.

JIEZI V1.4.0 firmware download link and update instruction: Click here

Updated at 2025-07-29

JIEZI V1.3.0 firmware changes are as follows:

1. Optimized output amplitude in non-exclusive USB audio access mode on Android phones.

2. Optimized pop sound when unplugging to power off.

JIEZI V1.3.0 firmware download link and update instruction: Click here