well my tablet was working fine but after sometimes it began to freez on boot screen , i tried every method and i finished always by trying to reset the tablet and lose all my data on it , untill one day it froze , and even reset wouldn't solve the prob , so i tried flashing the rom , but the problem is i followed every step i found on lenovo site but when i tried to flash the rom it reachs 31% and it stops and the flash tool pop up saying "s_da_sdmmc_write_failed(3149) " i tryed other version of sp flashtool the latest one , and it reaches 31% and popup "sft download fail 4008 " and when i press the power button it shows lenovo screen with "tool dl image fail'.... i tried downloading every item of the rom and i found that when it reaches to download android to the flash it stucks then show 4008 error , also when it comes to user data it stucks at 1% and show error .... plz someone give me help i tried everything to solve the problem every solution on the web but i couldn't make a thing plz help