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para los que tienen la Activación del paquete Octoplus FRP Tool, después de un tiempo probando, me funcionó lo siguiente:
1. en Device Model, Eligen MTK Custom.
2. luego presionan Reset FRP (les va a salir un dialogo llamado Advanced Open Files)
3. donde dice PRELOADER, eligen este archivo "preloader_ztexa6735m_35u_m.bin" y presionan "OK"
4. las va pedir que lo conecten (deben presionar VOLUMEN + y conectar cable usb)... solo toma unos segundos y listo.
NOTA: funciona con otros equipos con procesador mt6735 y mt6737... como el ZTE A520
aquí les dejo el LOG de la operación
> Platform: __GENERAL RESET FRP METHODS
> Selected model: MTK CUSTOM
> Selected Download Agent: F:\GSM FILES\NCK DONGLE FILES\SP_Flash_Tool_v5.1904_Win\SP_Flash_Tool_v5.1904_Win\MTK_AllInOne_DA.bin
> Selected Preloader: C:\Users\snake\Desktop\preloader_ztexa6735m_35u_m.bin
> Please, power phone OFF (press and hold "Vol+" or "Vol-" button) and connect USB cable.
> Searching for a phone. Please wait...
> Found phone on COM239
> Detecting Chip Version...
> HW Chip: MT6737: 0335.0000
> HW Version: 8A00.CB00.0000.0000
> Connecting...
> Brom Version: 05
> BootLoader Version: FE
> Sending auth...
> Searching Download Agent...
> Selected DA: MTK_AllInOne_DA_v3.3001.2019-02-01.10:59_466507, n.11
> Sending Download Agent...
> DA sent successfully
> Initializing DA...
> Synchronizing with DA...
> NAND Flash: not installed
> eMMC Flash: .15010051.4531334D.420D7564.EE7B9E9D
> eMMC Flash: Samsung: QE13MB
> DA ver: 4.2.9B
> 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: 2048 Mb
> Reading partition...
> Reading info...
> Brand: Gigaset
> Model: Gigaset GS170
> Device: GS170
> Platform: mt6737m
> Android version: 7.0
> Display ID: GIG_GS170_S105
> Resetting FRP lock..
> FRP lock is successfully reseted!
> Backup saved as Gigaset_Gigaset GS170_28-08-2019_17-18-04.dump file
> Performed by 1.7.7.7 Software version.
1. en Device Model, Eligen MTK Custom.
2. luego presionan Reset FRP (les va a salir un dialogo llamado Advanced Open Files)
3. donde dice PRELOADER, eligen este archivo "preloader_ztexa6735m_35u_m.bin" y presionan "OK"
4. las va pedir que lo conecten (deben presionar VOLUMEN + y conectar cable usb)... solo toma unos segundos y listo.
NOTA: funciona con otros equipos con procesador mt6735 y mt6737... como el ZTE A520
aquí les dejo el LOG de la operación
> Platform: __GENERAL RESET FRP METHODS
> Selected model: MTK CUSTOM
> Selected Download Agent: F:\GSM FILES\NCK DONGLE FILES\SP_Flash_Tool_v5.1904_Win\SP_Flash_Tool_v5.1904_Win\MTK_AllInOne_DA.bin
> Selected Preloader: C:\Users\snake\Desktop\preloader_ztexa6735m_35u_m.bin
> Please, power phone OFF (press and hold "Vol+" or "Vol-" button) and connect USB cable.
> Searching for a phone. Please wait...
> Found phone on COM239
> Detecting Chip Version...
> HW Chip: MT6737: 0335.0000
> HW Version: 8A00.CB00.0000.0000
> Connecting...
> Brom Version: 05
> BootLoader Version: FE
> Sending auth...
> Searching Download Agent...
> Selected DA: MTK_AllInOne_DA_v3.3001.2019-02-01.10:59_466507, n.11
> Sending Download Agent...
> DA sent successfully
> Initializing DA...
> Synchronizing with DA...
> NAND Flash: not installed
> eMMC Flash: .15010051.4531334D.420D7564.EE7B9E9D
> eMMC Flash: Samsung: QE13MB
> DA ver: 4.2.9B
> 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: 2048 Mb
> Reading partition...
> Reading info...
> Brand: Gigaset
> Model: Gigaset GS170
> Device: GS170
> Platform: mt6737m
> Android version: 7.0
> Display ID: GIG_GS170_S105
> Resetting FRP lock..
> FRP lock is successfully reseted!
> Backup saved as Gigaset_Gigaset GS170_28-08-2019_17-18-04.dump file
> Performed by 1.7.7.7 Software version.
