Dear Sir: keil mdk 4.6 lpc1114 cannot swd use j-link v8 but use iar arm can use j-link v8 swd lpc1114 the iar arm and keil mdk j-link driver have different? how to solve this question? Tks!!
There's typically a Keil directory containing the Segger drivers and support DLLs. Make sure those are current, or equivalent to the ones that work successfully with IAR.
Segger also recognizes and suppresses bootleg devices. Got one of those? Check also with Segger support about issues with your J-LINK.