Under the manufacturer panel, select , then select Standard Serial over Bluetooth link .
Standard Bluetooth audio devices (headphones, speakers) normally use the Advanced Audio Distribution Profile (A2DP) or Headset Profile (HSP), both of which are natively supported by Windows. The SPP protocol, however, is a data‑oriented profile—not audio—and requires a manufacturer‑specific driver to interpret the data stream. Because JieLi chips are often found in generic or white‑label products (e.g., low‑cost Bluetooth earphones, USB Bluetooth dongles), those products are not certified for Windows, and the necessary driver is not distributed through official channels. Consequently, Windows can only label the device as "unknown" and display the "jl‑spp driver" entry.
. It often appears under "Other devices" with a yellow exclamation mark or question mark when Windows cannot find a digitally signed driver for a connected Bluetooth peripheral. Acer Community Key Characteristics
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Windows updates frequently remove unsigned third-party drivers.
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After confirming your jl-spp driver works, try sending AT commands via a serial terminal or flash a new firmware using Jieli’s SDK. The world of low-cost Bluetooth development awaits. Under the manufacturer panel, select , then select
Go to . Often, generic drivers for SPP devices are located here. Manual Uninstallation:
: Creates a virtual serial link that allows standard software (like serial monitors) to interact with the hardware as if it were connected via a physical cable.
because the manufacturer may not have provided a WHQL-certified driver for that specific hardware ID. Because JieLi chips are often found in generic
If your device is working fine, you can often ignore the "JL_SPP" error. If you want to clear it, try these steps: : Press Windows + R , type services.msc , and hit Enter.
Complete failure to sync data between your computer and wearable health trackers or smart peripherals. Step-by-Step Solutions to Fix JL_SPP Driver Issues
Refers to Zhuhai Jieli Technology, a prominent semiconductor manufacturer that builds low-cost, highly integrated Bluetooth audio and data chips found in millions of consumer electronics.