J-Link downloads

The J-Link software & documentation pack gives you the USB drivers needed for your system, a number of utilities as well as a dynamically linkable library (DLL on Windows) used by most of the IDEs and debuggers using J-Link.

Also included are a number of sample setup scripts for devices needing one as well as documentation. The package can be downloaded and used free of charge by any owner of a J-Link, J-Trace or Flasher ARM, Flasher RX model.

It is updated frequently. All utilities and features included can be used on any of these units without the need for an additional license, with the exception of J-Flash, RDI and "Unlimited Flash Breakpoints", which require a separate license on most units (not J-Link ULTRA+, J-Link PRO or J-Link PLUS which include all licenses)

J-Link software & documentation pack can also be used with J-Link KS, SAM-ICE, mIDASLink, DIGI JTAG Link and any other licensed J-Link compatible emulator.
 

Subscribe to the J-Link software update notification list 


J-Link software & documentation pack for Windows

Installing the software will automatically install the J-Link USB drivers. It also offers to update applications which use the J-Link DLL. Multiple versions of the J-Link software can be installed on the same PC without problems; they will co-exist in different directories.

The package contains:

  • GDB Server - Support for GDB and other debuggers using the same protocol. GUI & command line version.
  • J-Link Configurator - Free utility to manage a various number of J-Links connected to the PC via USB or Ethernet.
  • J-Link Commander - Simple command line utility, primarily for diagnostics and trouble shooting.
  • J-Link Remote Server - Free utility which provides the possibility to use J-Link / J-Trace remotely via TCP/IP.
  • SWO Viewer - Free tool which shows terminal output of the target performed via SWO pin.
  • J-Mem - Memory viewer.
  • J-Link DLL Updater - Allows to update 3rd party applications which use the J-Link DLL.
  • Free flash programming utilities - Simple command line utilities which allow programming a bin file into the internal/external flash memory of popular eval boards.
  • USB driver (Includes driver for J-Links with CDC functionality).
  • Manuals: UM08001 (J-Link User Guide), UM08003 (J-Flash User Guide), UM08004 (RDI User Guide), UM08022 (Flasher User Guide).
  • Release notes for J-Link DLL, J-Flash, J-Link RDI DLL.
  • J-Flash, including sample projects for most popular eval boards.
  • J-Link RDI  - Support for ARM RDI standard. Makes J-Link compatible with RDI compliant debuggers.
Software and documentation pack for Windows V4.90 [20,125 kb]
md5 checksum: 8c3335d09848ef8fdc66cec27d60b1a3

J-Link software & documentation pack for Linux

The package contains:

  • GDB Server - Support for GDB and other debuggers using the same protocol. Command line version.
  • J-Link Commander - Simple command line utility, primarily for diagnostics and trouble shooting.
Software and documentation pack for Linux V4.90, DEB Installer 32-bit version [6,834 kb]
md5 checksum: 3421eec8abd8009aff3d092979dfd46f
Software and documentation pack for Linux V4.90, DEB Installer 64-bit version [7,032 kb]
md5 checksum: 2a1832332cb8314ac66e29cb94663168
Software and documentation pack for Linux V4.90, RPM Installer 32-bit version [6,836 kb]
md5 checksum: 1f498066c6d94b0b8833b01a0d4f8cb9
Software and documentation pack for Linux V4.90, RPM Installer 64-bit version [6,226 kb]
md5 checksum: 40e53ef7d1ed6b7b00fcd95aa36165e9
Software and documentation pack for Linux V4.90, TGZ archive 32-bit version [6,844 kb]
md5 checksum: 4a4698f4457ff3b73723bf2ccb8f8090
Software and documentation pack for Linux V4.90, TGZ archive 64-bit version [7,041 kb]
md5 checksum: 72a7bfc187412571d18c6ff3e0387338

J-Link software & documentation pack for Linux ARM systems

The package contains:

  • GDB Server - Support for GDB and other debuggers using the same protocol. Command line version.
  • J-Link Commander - Simple command line utility, primarily for diagnostics and trouble shooting.

Note: This package is only needed for the special case if J-Link is controlled by a Linux system which is running on an ARM hardware (so J-Link is connected via USB/Ethernet to this ARM system that is running Linux). In case J-Link is just connected to a PC running Linux, the "J-Link software & documentation pack for Linux" is the correct package.

Note: This package comes without any support.

 

Software and documentation pack for Linux ARM systems V4.90 [6,745 kb]
md5 checksum: fbdacd13208cfac3e5f695be5b1c36da

J-Link software & documentation pack for MAC

The package contains:

  • GDB Server - Support for GDB and other debuggers using the same protocol. Command line version.
  • J-Link Commander - Simple command line utility, primarily for diagnostics and trouble shooting.
Software and documentation pack for Mac OS X V4.90 [10,839 kb]
md5 checksum: 4cd0163fe2ee9ef8ffc7989fd9fd7c14

 Manuals

  Manual Version Size
Flasher manual (UM08022) 4.82 Rev. 0 1,971 KB
J-Flash manual (UM08003) 4.82 Rev. 0 579 KB
J-Link manual (UM08001) V4.86 Rev. 2 3,257 KB
J-Link GDB Server manual (integrated into UM08001)
   
J-Link RDI manual (integrated into UM08001)    
J-Link USB Protocol manual (RM08001) Rev. 7 350 KB

 


Beta software

We frequently publish new Beta versions. The Beta versions follow our current development version very closely and contain the latest features and improvements. However, the Beta versions are not thoroughly tested, but it is usually safe to assume that the Beta version can be used without risk.

Beta software version                               Previous software versions
 


Release notes

Latest J-Link DLL release notes
Latest J-Flash release notes
Latest J-Link RDI DLL release notes
 


Terms of use

The software consists of proprietary programs of SEGGER, protected under copyright and trade secret laws.
All rights, title and interest in the software are and shall remain with SEGGER.

SEGGER J-Link software may only be used with original SEGGER products and authorized OEM products.
The use of the licensed software to operate SEGGER product clones is prohibited and illegal.

More information...