The original JAF driver version 1.0 and 1.2 had three major flaws on Windows 10 64-bit:
| Issue | Original Driver | v1.5 Fixed Driver | |-------|----------------|-------------------| | Driver Signing | No digital signature | Modified .inf with test-signing workaround | | COM Port Allocation | Fails to assign above COM9 | Forced manual assignment up to COM255 | | USB Sleep/Power Management | Driver resets during flashing | Disabled USB selective suspend in .inf | | PnP Detection | JAF box recognized as "Unknown Device" | Forced PnP ID matching |
The "15 Fixed" in the keyword refers to a specific build released around mid-2015 by a Russian developer group ("Unlocker Team"). This build incorporates:
Note: "Error 15" in JAF flasher software typically means a USB communication timeout. The v1.5 fixed driver directly addresses this by increasing the USB read/write buffer size from 4KB to 64KB. jaf box driver for windows 10 64 15 fixed
| Error | Cause | How v1.5 Fixed Solves It | |-------|-------|---------------------------| | Code 52 – Driver not signed | Windows DSE | Includes a modified .inf with fake signing + instructions to disable DSE temporarily. | | Device cannot start (Code 10) | Power/IRQ conflict | Updated hardware IDs and power management flags in the driver. | | COM port disappears after flash | USB selective suspend | Driver now disables USB selective suspend via registry tweak during install. | | PKEY not found – but box is connected | VID/PID mismatch | Corrected VID_04D8 & PID_00B4 in the driver’s .inf file. |
Title: Finally got my JAF box working on Windows 10 64-bit – v15 fixed driver does the job
Review:
After struggling with driver signature errors and the infamous "Device cannot start (Code 10)" issue on Windows 10 64-bit, I came across the JAF Box driver v15 fixed. Here’s my honest take: The original JAF driver version 1
Pros:
Cons:
Tip for others:
After installing, manually update the driver via Device Manager → Legacy hardware → Install from list → Have disk. Use the .inf file from the v15 fixed package. Reboot with bcdedit /set testsigning on if needed. Note: "Error 15" in JAF flasher software typically
Verdict:
If you still repair old phones and have a genuine JAF box, this driver is a lifesaver. Just be prepared for a slightly technical installation. Not plug-and-play, but worth the effort.
JAF Box typically uses a specific USB-to-Serial controller. In many cases, it uses the FTDI chipset.