I download the application using flash downloader ftool. At this time, lock bit is not set.
But a lock bit of special block is set when Bootloader try to erase the block of code for application.
So Bootloader can't received the response of erase command because of lock bit.
What should I do to resolve this issue?
Unfortunately you have not mention which device you are using. However, for all devices there is a command available which will disable the lock bit protection and allow to erase the block afterwards. How this is done depends on the device and the used library.
I need to buy a flash programmer Renesas HD64F2638F20V, HD64F3048, H8SX-1544 (R5F61544) it can rewrite MCU Program by 10-pin target jtag adapter
advise me .what name of tool I buy
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