I flashed CM13 rom with my xt1570(China), but the TFcard is invalid. It is useless to farmat it.
then i get a more serious trouble:
1: It is very slow to write anyting to internal card or TF card, except card reader.
2: I get the error("FAILED (data transfer failure (Unknown error)) ") when i flash the offical rom, it is very slow when I flash it.
Now, I can install rom, but the internal card and the TF card are very slowly to writen.( I spent ten minutes to flashing the recovery.）
Help!
then i get a more serious trouble:
1: It is very slow to write anyting to internal card or TF card, except card reader.
2: I get the error("FAILED (data transfer failure (Unknown error)) ") when i flash the offical rom, it is very slow when I flash it.
Now, I can install rom, but the internal card and the TF card are very slowly to writen.( I spent ten minutes to flashing the recovery.）
Help!
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