iRiver heeft voor zijn iMP-550 een nieuwe firmware uitgebracht met enkele nieuwe features en tweaks. Zo zijn in versie 1.20 bijvoorbeeld Xtreme 3D en een nieuwe Level Meter toegevoegd. De volledige lijst met veranderingen ziet er als volgt uit:
Added FeaturesImproved Features
- Xtreme 3D (MENU > SOUND > Xtreme 3D)
- Xtreme 3D mode is added to provide a stereophonic sound quality.
- The Xtreme EQ menu is unified with Sound menu.
- The adapter volume, sound balance, eq limit, tag auto eq is moved to the Sound menu (previously at Control menu).
- DBE (Dynamic Bass Enhancement) function is added. There are 5 levels, from 0(off) to 5. The default level is 4.
- Hold PROGRAM/MEMORY/EQ button to select Xtreme 3D.
- LEVEL METER (MENU DISPLAY > VISUALIZATION)
- 9 Band Level Meter is added to Visualization function. (The existing Level Meter is Level Meter 1, Newly added Level Meter is Level Meter 2.)
Fixed Bugs
- Display Russian Fonts
- Corrected Russian Font display
- Switching to CD mode when lost password
- When you don't remember the password in Tuner mode, you can switch to CD mode by holding MODE/CDnFM/STEREO.
- Now volume can be controlled in Game Mode.
- It beeps when you change Beep Volume to hear beep sound.
- Now the backlight is on when track changes after you set Back-Light to 20.
- When you set to Load Default in Tuner mode, the display overlapped with the loading animation.
- Now Fade On/Off works in Tuner mode.