JTAG J-LINK V8 - Locked/Blocked - HELP

**Dunker** · 6th May, 2015, 01:08 PM

I dont do Teamview - or anything like it to be fair. All files including J-Link firmware and drivers are posted in this thread. Just follow my instructions above. It is all pretty simple. If you are struggling with this I'd be careful of using the J-Link on anything expensive, it can brick things it is connected to...

**forumoto** · 6th May, 2015, 04:57 PM

this is screen shot of device manager

**Dunker** · 6th May, 2015, 10:12 PM

Thats exactly what I had. Windows has picked the wrong driver instance. I deleted the driver, scanned for new hardware again and then manually chose the driver to install.

**forumoto** · 7th May, 2015, 07:27 AM

I have deleted th driver and reinstalled it and it came up in usb not at port section again, now when i did all i could and i launch the jlink configurator at the process to click on update firmware, it report that my device is CLONE, even though i am doing this offline... please what should i do, i try to ignor the message and click on update but during the update the software close.

am flashing with de file in page 1

**asliyucegsm** · 7th May, 2015, 09:40 AM

friend dies Segger correction I tried running
J-Link you do use it with orginale

**forumoto** · 7th May, 2015, 08:56 PM

here is the status of my clone which software detect as clone

**forumoto** · 7th May, 2015, 10:42 PM

Originally Posted by asliyucegsm

friend dies Segger correction I tried running
J-Link you do use it with orginale

I have tried your firmware and here is an update with image of how it look when i click on J Flash, i want you to check and see if all is okay and can it work

**Dunker** · 8th May, 2015, 01:55 AM

Your firmware string looks wrong in your commander screenshot. Maybe sort that first with a hex editor. Also, if have you definitely updated your J-Link with configurator before entering your serial number with commander it should be ok. If you update firmware with anything above 4.84 using commander as opposed to configurator it will fail.

The firmware in the post above looks unmodified according to the info in the sonsivri and dfrobot threads (bytes above the features string location are not FF'd out). Mine are but if they work for you - crack on.

There is obviously something in the > 4.96m dll that checks something we havent seen. Need to cut back on the beer and find it... Or even, extract the proper firmware from the dll and use that instead. Unless it is just a serial number issue after all...

**forumoto** · 8th May, 2015, 07:51 AM

I have use asliyucegsm firmware posted and had the above screen gui window screen shot posted above, i want to know if the above window image look okay, how do i test the device to be sure it can work now....

**Dunker** · 9th May, 2015, 04:10 PM

Your commander screenshot looks like the firmware from post #8. The asliyucegsm firmware has GDBFULL not GDBFull in its features string. Your J-Flash screenshot must be usung the latter. No matter. If commander and J-Flash work now without any clone issue then it should work. Just find a board with a chip that is supported by the J-Link, do some reading and connect up. BTW both firmwares are the same, the only differences are the bytes you should be altering yourself anyway.

**forumoto** · 11th May, 2015, 09:00 AM

what could be the reason why this error comes when i try to connect to the device, please help

this message comes, when for example, i pick a flash file from open it to the platform and click on target ---> connect, this message will come and as it appear, means it wont work on flashing device, this has being my issue for long

**Dunker** · 12th May, 2015, 01:21 AM

We have all had this error a million times. Need details of target first.

**armini** · 25th October, 2016, 04:22 AM

Hi friends, How are you? does SIGGER JLINKV8 has upgrade in 2016?

**JareckiPL** · 6th January, 2019, 04:07 PM

Guys, do you have good working firmware with good SN for v8?. Please upload for me

**dbfonseca** · 3rd April, 2020, 10:49 AM

Anyone knows where can I find segger 4.90? My black brick is V8, I'm new one here. Serial is ok after exec command. I just need use as SPI reader/writer (sdmmc). Any suggestion?