Connecting to Download port...
Make sure battery is fully charged before flashing !!!
Power off the phone, Disconnect and reconnect the battery(if possible), Hold the VOL DOWN or VOL UP+DOWN and connect USB cable
Scanning Download port... Done
Detected SPRD U2S Diag (COM53)
Connection status: XHCI:HUB3[#4]:USB 2.00 High-Speed
USB Device: [??] ?? ??
USB Driver: [UNISOC Communications Inc.] sprdvcom, version: 4.19.38.134, date: 12-9-2019
Boot id: SPRD3
Sending FDL ... Done
Boot version: Spreadtrum Boot Block version 1.1
Change baudrate to 460800 ... Done
Sending NAND_FDL ... Failed
Realme c61 rmx3930
i have load the firmware then try to identify the device