This is step by step tutorial to show you how to upgrade firmware in VESC tool.
Example : vesc tool : 1.13 ----> 3.57 firmware version
Step1: Power on the ESC and connect ESC with PC, Click "Welcome&Wizards" to "Auto Connect", make sure connected.
Step2: After connection, Click "Firmware" --"Included files" , (choose 60 for V6, 410&411&412 for V4), Click "Yes" , and then upload it.
Pay attention to the Warning.
Step3: Please disconnect the ESC&PC after the firmware upgraded.
Step4: If the upgrade failed. please power off ESC and replug in with the battery, repower on the ESC. Re-connect with the PC to make sure it's connected.
Step5: go to "Firmware", click "Bootloader" and choose the correct mode to reupload (60 for V6, 410&411&412 for V4).
Step6: After the bootloader has done, please redo the firmware upgrade from the first step（click firmware-->include files--choose the correct vesc...).
Till now, all upgrate process is full showed by pictures. do you get it？
VESC TOOL download: https://vesc-project.com/vesc_tool
Get HGLTECH-Flipsky FSESC here: https://www.gd-hgl.com/collections/hgltech-flipsky-esc