ARM ICE, JTAG, SWD
This is JLink-OB ARM ICE tool, STM32F103 Jan 7 2019 firmware extract from v6.44 JLinkARM.dll.
This version(STM32F103 Jan 7 2019 ) failed to upgrade the firmware of the JLink-OB with JLinkConfig.
1.burning STM32F103 Jan 7 2019 firmware to DIY JLink-OB.
2.Connect targer(For example the following picture is my STM32F405 Digital Stethoscope project)
1.Run JLinkExe.
2.J-Link > connect.
3.Select device. # the example is STM32F405
4.Device > S. # for SWD Port
5.Speed = 4000kHz
1.J-Link > mem 0x8000000 40960
2.Test dump target flash.
3.You DIY JLink-OB done.