First, we need to turn off the equipment. After shutdown, we hold down the "P+s" key at the same time.

Then, when we hold down the "P+s" key at the same time, we restart the machine and start it again.

When the motor starts, we will release these two keys, and then we need the "P" key+"-logo menu" and select "p68".

Then, we press the "S" key to display the data and high speed, return to the p57 menu, and modify the speed so that it does not exceed 4800.

Finally, we return to the p 1 menu page. After the setting is completed, we will return to the boot interface "3333" and directly shut down and save it.