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Renesas RL78 devices have On-Chip debug security ID setting area. The values programmed to this device memory area are compared to the values of the bytes set in the winIDEA. If these two do not match, you get different effects when trying to debug this device like: RL78 ERROR Unlock ID co...
When downloading a suitable version from winIDEA Download page note that Renesas E1/E2 Debugger works in: Renesas RL78 - 9.21.173 and newer Renesas RH850: 9.17.157to 9.21.100 (64-bit version) 9.17.116 to 9.17.156(32-bit and 64-bit version)