I have a product developped on PSOC3 and PSOC Creator 3.3. For some reason, I wanted to migrate the design on PSOC Creator 4.2. The design works well in 4.2 but when it cames to use Host Bootloader 4.2 to update the product I got the message "Command not recognized : the supported commands are defined in the Bootloader section of the System Refer Guide". Even if I have this message, the upload seems to be succesful.
Also, If I use Host Bootloader 3.3 and I use the same .cyad file compiled from PSOC Creator 4.2, I don't get the message.
I am able to bootload a PSoC Creator 3.3 compiled bootloadable cyacd file using PSoC Creator 4.2 based Bootloader host. Could you share the working PSoC Creator 3.3 bootloader and bootlodable projects?