i uploaded unlocked firmware this phone - SPD_DUALSIM_S519_UNBRANDED_EN_RU_UNLOCKED.zip
but 2slot for sim remained blocked (1 slot - work)
Code:
Start Detect phone.
Remove the battery and connect handset to PC via USB cable.
After long press "0" key while inserting the battery.
Detected: SPRD U2S Diag (COM3)
Download mode ok.
BOOT: SPRD3
Sending loader, wait.
BOOT OK: Spreadtrum Boot Block version 1.2
CPU: 6530
Changing Baud.
Reading Flash Info, wait...
Flash Size: $400000
Fixed NVRAM adress: $388000
EFS start adress: $390000
Selected firmware: SPD_DUALSIM_S519_UNBRANDED_EN_RU_UNLOCKED.spd
Reading NV.
Backup saved: backup\spd_phones\860254025960461_saved_nv_1.bin
Start write file: nvitem_release.bin
Write File Done.
Format OK.
Start write file: flash_spd_6530.bin
Write File Done.
Start write file: res_sml_cfg.bin
Write File Done.
Format OK.
Flashing done.
--------------------------
Log saved to:
logs\ZTES519_flash_log3.txt