Hi tr9,
1. What specific OpenSDA drivers should we be using?
FRDM-KE06Z, FRDM-K22F, and FRDM-K64F have different opensda version.
FRDM-KE06 is using the opensda v1.x, this on board K20 can't be mass erased. Then you can't change the on board K20 code.
FRDM-K22F, and FRDM-K64F is the opensda v2.0/2.1. These version have problems in win10.
More details, please check this link:
OpenSDA Serial and Debug Adapter | NXP
Freedom OpenSDA Firmware Issues Reported on Windows 10
So, you need to update the K20 code to DAPLink rev0244 OpenSDA v2.2 Bootloader
About the opensda, you need to use DEBUG_OpenSDA_for_MBED_Bootloader_by_Pemicro_v108.bin

2. Are there specific .srec files we should load into the debug chips of these boards.
FRDM-KE06Z just can change the debugger firmware, can't change the K20 opensda version.
FRDM-K22F, and FRDM-K64F can change the K20 code.
More details and the firmware, go to this link:
OpenSDA Serial and Debug Adapter | NXP
Wish it helps you!
If you still have question about it, please kindly let me know.
Have a great day,
Kerry
-------------------------------------------------------------------------------
Note:
- If this post answers your question, please click the "Mark Correct" button. Thank you!
- We are following threads for 7 weeks after the last post, later replies are ignored
Please open a new thread and refer to the closed one, if you have a related question at a later point in time.
-------------------------------------------------------------------------------