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Okay, problem solved. Thank you so much for your help Niklas!

I've forgotten to say the project I'm working on is using the ATSAMS70J21. according to the docs, 0x00400000 is the start of internal flash

I've uploaded the hex file as well Console: J-Link software found at: C:/Program Files/SEGGER/Ozone V2.44/JLink_x64.dll File path resolved: "Cortex-M7F.svd" was found at "C:/Program Files/SEGGER/Ozone V2.44/Config/CPU/Cortex-M7F.svd" Project.SetDevice ("Cortex-M7"); Project.SetHostIF ("USB", ""); Project.SetTargetIF ("SWD"); Project.SetTIFSpeed ("5 kHz"); Project.AddSvdFile ("Cortex-M7F.svd"); File path resolved: "Cortex-M7F.svd" was found at "C:/Program Files/SEGGER/Ozone V2.44/Config/CPU/Corte…

Hi Niklas. You're right, I think the wiring for the power supply for the uC may have been the issue unfortunately (I bumped it and it connected successfully), but now I've come back to my previous problem which is Atmel studios freezing at "loading symbol info... (95%)" before asking me is I would like to terminate which is followed by "Timed out waiting for initial target stop event". The J-link led is off while this is happening. Keil uVision 5 also freezes when uploading a program.

My problem is that once connected to the board (via jtag and the board is powered by USB) J-link commander recognizes the chip as atsams70n21 or something like that instead of the atsame70q21 that is in place on the board. If you could help shed some light on this that would be wonderful. I should mention that it used to detect the correct chip, but now does not.

I have a development board to which I connect the j-link header. There is no ATSAMS70N21 on this dev board. It used to detect the correct chip, but now it doesn't. It still detects the correct voltage, but cannot connect to any target.Is it broken? If I've left out information please let me know. I don't have very much experience with embedded programming or systems and what I do know was self taught from docs and application notes.