Jieli Ac4100 Bluetooth Driver

| Feature | Rating | Notes | |--------|--------|-------| | Pairing speed | Good | Typically 2–5 seconds. | | Range | Fair (~10m line-of-sight) | Drops quickly with walls/interference. | | Audio quality | Acceptable | Supports SBC codec only (no AAC/aptX). | | Latency | Moderate (~150–200ms) | Noticeable in gaming/video without A/V sync. | | Power efficiency | Excellent | Common in battery-sensitive devices. |

The Jieli AC4100 does not have a hardware-level boot ROM protection. If you flash the wrong firmware (e.g., a firmware from a different speaker brand), you can brick the device permanently. Recovery requires desoldering the flash chip and using an external programmer.

Always:

The driver for the AC4100 is usually customized by the company that made the dongle (e.g., UGREEN, generic brands).

The Jieli AC4100 is a chipset often found in Bluetooth dongles, wireless speakers, and older USB peripherals. While specific "official" drivers are rarely provided directly by Jieli for end-users, these devices typically use Generic Bluetooth Adapter drivers built into Windows. How to Install or Update the Driver Jieli Ac4100 Bluetooth Driver

Use Windows Update:The most reliable way is to let Windows find the best driver automatically. Plug in the device, go to Settings > Update & Security > Windows Update, and click "Check for updates". Device Manager (Manual Update): Right-click the Start button and select Device Manager.

Find the device under "Bluetooth" or "Other Devices" (it may appear as "AC4100" or "CSR Bluetooth Chip"). Right-click it and select Update driver. Choose Search automatically for updated driver software.

Third-Party Repositories:If Windows fails to find a driver, certain hardware archives like Driver Scape or DriverIdentifier host driver packages specifically for the AC4100 chipset. Specifications for AC4100 Drivers Information Common Version 6.3.9600.16384 (or similar) Supported OS Windows 7, 8, 8.1, and 10 (32/64-bit) Hardware ID Example USB\VID_E5B7&PID_0811

Note: If you are using this for an Intel-based laptop, you might actually need the Intel Wireless Bluetooth Drivers if the Jieli device is an external dongle conflicting with an internal card. | Feature | Rating | Notes | |--------|--------|-------|

Are you having trouble with the device not being recognized, or are you trying to fix a connection issue?

This guide covers what the chip is, why the driver is needed, how to identify it, installation procedures, and troubleshooting.

If the AC4100 shows up but plays no sound:

Cause: Conflicting drivers or corrupted installation. If the AC4100 shows up but plays no sound:

Fix:

Before attempting to install drivers, verify you actually have the AC4100 chip inside your device.

Once the driver is working, you can use Jieli’s proprietary tools (not included with the driver – must be downloaded separately):

Popular firmware mods include: