Learn how to unbrick/flash this device using sp flash tool from here Note
Follow the instructions on how to flash the device carefully from the link aboveI will not take responsibility on whatever may happen to your device.
Make sure you are downloading the exact ROM of the device you want to flash because flashing a wrong preloader, will make the device completely dead (can't power on, can't charge and will not be detected by a computer)
Cubot A6589A6589_MT6589_Android4.1.2348MBDOWNLOAD*************************************************
Cubot C6C6_MT6572_Android4.2.2367MBDOWNLOAD*************************************************
Cubot C9WC9W_MT6572_Android4.2.2201MBDOWNLOAD*************************************************
Cubot C10+C10+_MT6589_Android4.2.2263MBDOWNLOAD*************************************************
Cubot GT89GT89_MT6589_Android4.2.1280MBDOWNLOAD*************************************************
Cubot GT99GT99_MT6589_Android4.2.1434MBDOWNLOAD*************************************************
Cubot M6589M6589_MT6589_Android4.2.1406MBDOWNLOAD*************************************************
Cubot One TurboOne Turbo_MT6589_Android4.2.1321MBDOWNLOAD*************************************************
Cubot P5P5_MT6572_Android4.2.2325MBDOWNLOAD*************************************************
Cubot P6P6_MT6572_Android4.2.2301MBDOWNLOAD*************************************************
Cubot P7P7_MT6582_Android4.2.2416MBDOWNLOAD*************************************************
Cubot P9P9_MT6572_Android4.2.2475MBDOWNLOAD*************************************************
Cubot P10P10_QHD_8P64_140905_B1B5_4.2.2Chip: MT6572419MBDOWNLOADP10_QHD_8P64_150121_B1B5_4.2.2
Chip: MT6572363MBDOWNLOAD*************************************************
Cubot P11P11_MT6580_Android5.1591MBDOWNLOAD**************************************************
Cubot P12P12_MT6580_Android5.1656MBDOWNLOAD**************************************************
Cubot S108S108_MT6582_Android4.4.2372MBDOWNLOAD**************************************************
Cubot S200S200_V05_MT6582_Android4.4.2652MBDOWNLOAD**************************************************
Cubot S208S208_V12_MT6582_Android4.2.2438MBDOWNLOAD**************************************************
Cubot S222S222_MT6582_Android4.2.2438MBDOWNLOADS222_V6_CQ_4139C_V0.0.2_Android4.2.2
422MBDOWNLOAD
**************************************************Cubot S308S308_V6_CQ_V0.0.4_MT6582_Android4.2.2425MBDOWNLOAD********************************************************
Cubot S500S500_V07_MT6735M_Android5.1558MBDOWNLOAD********************************************************
Cubot S550S550_V06_MT6735_Android5.1669MBDOWNLOAD********************************************************
Cubot S600S550_MT6735_Android5.1669MBDOWNLOAD********************************************************
Cubot T9T9_MT6589_Android4.2.1394MBDOWNLOAD********************************************************
Cubot X6X6_MT6592_Android4.2.2386MBDOWNLOAD********************************************************
Cubot X10
X10_V02_MT6592_Android4.4.2547MBDOWNLOADX10_V21_MT6592_Android4.4.2
550MBDOWNLOAD********************************************************
Cubot X11X11_MT6592_Android4.4.2494MBDOWNLOAD********************************************************
Cubot X12X12_MT6735M_Android4.4.2543MBDOWNLOAD********************************************************
Cubot X15X15_MT6735_Android5.0727MBDOWNLOAD********************************************************
Cubot X16X16_V04_MT6735_Android5.1769MBDOWNLOADX16_V13_MT6735_Android5.1
810MBDOWNLOAD********************************************************
Cubot X17X17_5091C_V03_MT6735_Android5.1769MBDOWNLOAD