Project Settings:

SWD @ 4000kHz
Target Device NXP MK81FN256xxx15
Flash Bank0 256K Internal
Flash Bank1 64M External QSPI BankA
Flash Bank2 Disabled
Production Selected Sectors
Production Erase+Program+Verify checked
Production Override Timeouts erase 45000ms, program 30000ms, verify 30000ms


Synopsis:

With Original J-Flash V6.50a:
J-Flash Production Programming F7 works
Stand-alone programming works

After update to J-Flash 7.60d:
J-Flash Production Programming Fails
- ERROR: Timeout while preparing target, RAMCode did not respond in time. (PC = 0x00000000, CPSR = 0x00000000, LR = 0x61000000)!

After Reverting to J-Flash V6.50a:
- J-Flash Production Programming F7 works
- Stand-alone programming FAILS!

Seems that I need to downgrade the Flasher firmware to whatever it was when V6.50a was released. Where do I find the .bin file?

Thanks!

Segger responded directly with the solution. Upcoming release of J-Link/J-Flash will include fix for this. Please mark as solved. Thanks.