JlinkV8 led does not illuminate USB unrecognized issue

Resolution: The Internet to check the relevant information, said that it is necessary to re-burn firmware

Method: 1. Go to Atmel official website download at91-isp download software at91-isp v1.13.exe, install At91-isp v1.13.exe (default) and download it online

J-link v8.bin File

2. Open the J-link emulator and locate the three pairs of jumpers, labeled Erase, Jtagsel, TST, respectively

3. Connect the J-link to the PC with a USB cable, and then short-connect the jumper with the erase, time 1 minutes or more!

4. Disconnect the jumper and disconnect the USB cable

5. Short connect the jumper to the TST, then attach the USB cable, disconnect the USB cable after1 minutes , then disconnect the jumper

6. Open the newly installed At91-isp software (Sam-prog v2.4), click Browse to select the J-link v8.bin file, and tick the file encryption option Set Security

& Nbsp;              7. Connect the USB cable at this time, windows will find new hardware, prompting you to install the driver, choose Automatic installation on it. (If the driver is not installed, the following update firmware 2nd step may appear write The issue of Flash has not been invalidated. at this point the Write Flash option for the At91-isp software interface is valid, click the button to burn the software

8. After the burn is complete, the parameters after the active Connection of the Burning software interface will change to 1(and may not become 1) about 1 minutes

9. Burn complete, disconnect the USB cable emulator. Exit to quit the burn write program. Now you find that the Jlink light turns red now, it doesn't matter. Reconnect the Jlink indicator green flashing after the evergreen can be used

Note: I use the j-link inside the main controller model is AT91SAM7S64

JlinkV8 led does not illuminate USB unrecognized issue