Yyk525 User Manual Exclusive

The YYK-525 is a Bluetooth 5.1 wireless business headset featuring an ergonomic, 180-degree rotating ear-hook design with 10–12 hours of playtime. It pairs automatically when removed from the 500mAh charging case and supports MFB controls for calls, music, and voice assistants. For full, in-depth instructions, view the device.report manual. Bluetooth Headset YYK-525 black | Wasserman.eu

1. Unplug all cables.
2. Press and hold the power button for 45 seconds (not 10, not 30—45 exactly).
3. Release, wait 10 seconds, then plug in while holding the reset pinhole.
4. The bootloader will offer a "Rollback to last stable config." Select it.

• Charge Current: 2.0A (Standard for 2000mAh packs).
• Termination Voltage: 16.8V (Auto-set by profile; do not change).
• Safety Timer: 90 minutes.

Front Panel Interface

• OLED Display (1.3") : Shows real-time voltage, current, and mode. Double-tap the display (not a button) to rotate the screen orientation 180 degrees.
• Rotary Encoder (Main Dial) : Push to select. Rotate to adjust parameters. Exclusive note: A long-press (3 seconds) toggles "Turbo Mode" – bypassing standard safety caps for advanced users.
• FN (Function) Button : Short press cycles through A/B memory profiles. Long press enters the hidden diagnostic menu (covered in Chapter 6).