I have the same problem and I have tried all the best I could have done in a few days but everywhere I found something in the hope that I can do it to fix it so on these tablets leaving the memory EMMC is still the servicebox option (Z3X, RIFF, OCTOPLUS ) but my opinion is the same and it is only a temporary solution when it starts to blink it will be still. Best to replace the BGA eMMC flash or the entire motherboard