Получилось снять через FRP Tool. Понадобился только прелоадер, который здесь выложил уважаемый renat_d.
Код:
Platform: _GENERAL RESET FRP METHODS
Selected model: MTK CUSTOM
Selected Preloader: D:\Alcatel\5009D\preloader_lcsh6580_weg_sz_n.bin
Please, power phone OFF (press and hold "Vol+"/"Vol-" button) and connect USB cable.
Searching for a phone. Please wait...
Found phone on COM36
Detecting Chip Version...
HW Chip: MT6580: 6580.0000
HW Version: 8A00.CA00.0000.0000
Connecting...
Brom Version: 05
BootLoader Version: FE
Sending auth...
Searching Download Agent...
Selected DA: MTK_AllInOne_DA_v3.3001.2018-04-25.11:32_437806, n.11
Sending Download Agent...
DA sent successfully
Initializing DA...
Synchronizing with DA...
NAND Flash: not installed
eMMC Flash: .15010046.4536324D.4203ADDE.D8CAB459
eMMC Flash: Samsung: FE62MB
DA ver: 4.2.9C
Initializing Memory Flash..
Sending BootLoader Info...
Initialization successfully completed
Sending loaders...
Loader send successfuly.
Reading Flash Info...
EMMC rpmb size: 4 Mb
EMMC boot1 size: 4 Mb
EMMC boot2 size: 4 Mb
EMMC gp1 size: 0 Mb
EMMC gp2 size: 0 Mb
EMMC gp3 size: 0 Mb
EMMC gp4 size: 0 Mb
EMMC user area size: 14910 Mb
Internal RAM size: 128 Kb
External RAM size: 1024 Mb
Reading partition...
Reading info...
Brand: TCL
Model: 5009D_RU
Device: U5A_PLUS_3G
Platform: mt6580
Android version: 7.0
Display ID: NRD90M release-keys
Searching for signatures...
Resetting FRP lock..
FRP lock is successfully reseted!
Backup saved as TCL_5009D_RU_22-08-2018_11-05-33.dump file
Performed by 1.3.7.1 Software version.