Segger J Flash Arm Keygen Generator
You can buy a Segger JTAG J-Link clone for few USD on, aliexpress, dx. If you try to update its firmware with the official Segger tool, you'll brick the probe.
Don't worry, smart people have already put a checklist to restore a working firmware and even update it to the latest official version. I just put all the needed info into one single page. Unbrick it To restore the firmware, you need to follow the instruction from The best part? It works from Linux.
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For the step 9, you'll need the binary image to flash; use that one. It's from the same forum than above but without password and without additional useless.exe files. Download and install SAM-BA package from atmel.com. Open the j-link case by gently popping the plastic edge near the jtag or usb ports.
Identify the ERASE (pin 50) / TST (pin 40) jumpers/pins. Short ERASE jumper to pull-high and connect the jlink to usb; wait for a minute and disconnect usb. ('pull-high', means set a jumper between the ERASE pin and the 3.3V pin next to it.). Remove the ERASE jumper and short the TST jumper to pull-high and connect the jlink to usb; wait for a minute and disconnect usb.
Break/remove the TST jumper and reconnect USB. Your jlink should now be identified as AT91 USB to serial adapter and a COM port should be assigned to it - if this doesn't happen repeat from step 3. Something like cdcacm 1-1.2:1.0: ttyACM0: USB ACM device should appear in syslog or dmesg. Open SAM-BA program; select COM/ttyACM port that was assigned to your jlink and in board select 'at91sam7s64-ek'; click CONNECT.
Select 'FLASH' and select the BIN file you downloaded before and select to load the firmware into flash; the application will ask you if you want to unlock - select YES; at the end of programming there will be a similar question if you want to lock - select NO! (very important). Congratulations, you are done.
Reconnect the device and you should have a working jlink Update the firmware The previous step will reflash with a firmware from 2009. Info: J-Link ARM V8 compiled May 27 2009 17:31:22 Quite old and I prefer to have the latest one. Fortunately, the firmware you just flashed has a fake SerialNumber set to -1 and it happens to be enough to let the J-Link Configurator tool to flash it to the latest firmware without bricking it.
This time you'll need a windows machine. I used a Windows10 image under vmware and it worked fine. go to and fetch the Windows software pack.
The one I used was version 5.00g. install it and run the J-Link Configurator. It should detect the probe and allow you to update it to the latest firmware. Congratulations, you are done. Reconnect the device and you should have a working J-Link this the latest firmware Info: J-Link ARM V8 compiled Nov 28 2014 13:44:46 Edit1 While origin of the binary firmware used in this tuto remains unknown, several posts suggest to modify the 'GDBFull' string to either 'GDBFULL' or 'GDB' From: After found the BIN file, you have to open it with an hex editor and change the string 'GDBFull' with 'GDB' and also change the serial number.
As far as I remember the serial number is not a string but just raw hex data nearby the address where the 'GDBFull' string is located. Remember the raw data are little-endian. For the new serial number use something like '4054xxxx' where xxxx are random numbers. You need to change the serial number or you will get this error message about the device being 'defective'. I highly suggest that you DO NOT upgrade the firmware to a newer version until you first establish your own unique serial number (one that hasn't been 'blacklisted'). Only then will you be guaranteed success. To do that you use the 'J-Link Commander' program.
The serial number is NOT stored in the binary firmware file. It gets stored in the EEPROM of the SAM7S64 chip. The newer J-Link DLLs will cause the 'error message' if they see a serial number hasn't been set or if the serial number is one that is known to be used for 'fake' devices. You use the 'J-Link Commander' to set the serial: 1) Start J-Link Commander. 2) At the prompt, enter (without the quotation marks): 'Exec SetSN = xxxxxxxx'.
Choose an eight digit number, in place of the 'x's in that command, perhaps something in the range of 37000000 to 45000000 range. 3) Hit enter so it stores that in your j-link device. 4) Exit J-Link Commander (type: 'exit' and hit ). 5) Run J-Link Configurator and upgrade the firmware. You should see the serial number that you set from now on (not -1 and )! Now your device should work without problems.
I wasted a lot of time trying to inject serial numbers into the binary firmware file. It doesn't live there and I hope that you don't end up losing a lot of time doing the same. There is a lot of different methods found online to erase the Atmel chip in the j-link.
Atmel has their procedure for erasing the chip and restoring the bootloader. This is how it should be: Power the device. Put the ERASE jumper on. Wait at least one second. Remove power. Now, with the power OFF remove the ERASE jumper and instead apply the TST jumper instead. Power the device and WAIT AT LEAST 10 SECONDS (the bootloader is being transferred internally in the chip at this time).
Segger J Link
Remove power. Now remove the TST jumper. Now when connected to your computer, the device should show up as a device that the ATMEL Sam-ba program can talk to.
This will be the best way to start fresh, so you can load the old (2009) firmware that allows for an upgrade. Again, remember to only attempt the upgrade to a newer version of j-link firmware AFTER you have established your own, new Serial Number.!! One other thing that I forgot to mention. It is probably necessary to use a binary file editor and change the 'old' firmware (2009 version) so that the string 'GDBFull' is altered. I substituted four space characters in place of the 'Full' part and it worked. Seems like others used all-caps for the rest of 'Full' instead (result: GDBFULL).
It could be that the upgrade process will key on the lower case version and know that it 'isn't proper'.!? Pierre, I would like to suggest that you post a binary file with the string edited to be GDBFULL or just GDB instead of the file that is there now. It would make it easier for everyone downloading that by removing the steps needed to edit the file.! Regardless, ENORMOUS THANKS for providing the file that is there currently!!!!!
Flash download works (does not need an extra license) with the SEGGER J-Link software on all supported devices. Supported devices are most popular ARM-based microcontrollers, so all popular ATMEL AT91 devices (and many other of course) are supported.
Again, there is no extra license required; the only thing you need is a half-way recent version of the software. In case of doubt, donwload it from Flash download is free (not requiring a license) for J-Links and OEM versions of J-Link, such as SAM-ICE. An other option with J-Link and SAM-ICE is always to use OpenOCD with it. I'm not sure if 'RolfSegger' is really from Segger or just a user. Hi Alex, Thanks for your reply. I can run the Jlink Commander and it tells me 'Found 1 JTAG device, Total IRLen = 4: #0 Id: 0x3F0F0F0F, IRLen: 04, IRPrint: 0x1, ARM7TDMI Core' among others things. I am then stuck.
I have been unable to deduce how to get the J-Link command line to perform a Flash download from reading the manuals. The closest I can see is in document UM08001JLinkARM.pdf section 6.5.3, which describes an example for external flash.
Segger Flasher
I can't find anything for internal Flash. Is there an example anywhere? Regards ETA: Aha!
I was missing a exec device command. So now I have a script which reads.