флешеры разные использовать, на вопрос конфигов ответа нет
лог:
Phone Storage: EMMC
EXE: Ultimate Unisoc Module v0.1
SELECTED: SC7731E_EMMC_GENERIC
ACTION: Format Userdata
If phone will stuck on logo, perform factory reset from diag mode tab.
Loader format:NEW
Start Detect phone.
Phone must be off with battery inside.
Long press "VOL -" key while inserting usb cable.
Keep key until boot complete.
Detected: SPRD U2S Diag (COM 72)
Sending loader, keep boot key until loader start.
[0]Changing Baud Error.