Waiting For Device Connection... 
USB PORT: SPRD U2S Diag (COM10)
Port: SPRD U2S Diag (COM10)
Manufacturer: UNISOC Communications Inc.
OPEN COM PORT... OK
Waiting for server........ OK
Handshake NAND_FDL... OK
Boot version: SPRD3
Sending payload... OK
Sending preloader... OK
Sending nand_fdl loader... OK
Update partitions table... OK
Erase default partitions
 Erase uboot_log... OK
 Erase l_runtimenv1... OK
 Erase misc... OK
 Erase sysdumpdb... OK
 Erase metadata... OK
Flash splloader > Size: 0.00 bytes... OK
Flash vbmeta_a > Size: 1.00 MB... OK
Flash vbmeta_system_a > Size: 1.00 MB... OK
Flash vbmeta_system_ext_a > Size: 1.00 MB... OK
Flash vbmeta_vendor_a > Size: 1.00 MB... OK
Flash vbmeta_product_a > Size: 1.00 MB... OK
Flash l_modem_a > Size: 25.00 MB... OK
Flash l_deltanv_a > Size: 1.00 MB... OK
Flash l_ldsp_a > Size: 20.00 MB... OK
Flash l_gdsp_a > Size: 10.00 MB... OK
Flash pm_sys_a > Size: 1.00 MB... OK
Flash gpsgl_a > Size: 1.00 MB... OK
Flash gpsbd_a > Size: 1.00 MB... OK
Flash wcnmodem_a > Size: 10.00 MB... OK
Flash boot_a > Size: 64.00 MB... OK
Flash dtbo_a > Size: 8.00 MB... OK
Flash super > Size: 3.71 GB... OK
Flash cache > Size: 20.00 MB... OK
Flash userdata > Size: 0.00 bytes... OK
Flash logo > Size: 4.00 MB... OK
Flash fbootlogo > Size: 4.00 MB... OK
Flash socko_a > Size: 75.00 MB... OK
Flash odmko_a > Size: 25.00 MB... OK
Flash trustos_a > Size: 6.00 MB... OK
Flash teecfg_a > Size: 1.00 MB... OK
Flash sml_a > Size: 1.00 MB... OK
Flash persist > Size: 2.00 MB... OK
Flash cover > Size: 2.00 MB... OK
Flash uboot_a > Size: 1.00 MB... OK
Rebooting... OK
Elapsed Time: 2 mins, 12 secs, 157 msecs
Total WRITE Data: 3.87 GB
Operating speed: 29.96 MB/s