Maskrom to loder mode

please check this error

upgrade_tool ld::
List of rockusb connected(1)
DevNo=1 Vid=0x2207,Pid=0x350a,LocationID=17 Mode=Maskrom SerialNo=

i need to change mode to loader how?

Hello, I’m not sure which device you are using. Maybe you can refer to these documents:

Alternatively, you could offer more details regarding the issue and we’ll assist you.