Bug of the latest build of windows 10 (10572)

the latest build of windows 10 is more stable than other and very fast and no more resuming lower memory device..and there is an also option to run cortana in ENGLISH(india), it perrity good.microsoft also introduse new storage sence app .but its littel bit buggy. the problem is that after i upgrade my phone to latest build it can't show me the sd card ..for this i try to restart my phone,soft reset but i cant see sd card option..then i hard reset the phone so i can able to use sd card but no more after one time restart the same problem occurs.

windows 10 mobile build 10572 ffu

hi
i need build 10572 ffu file for rm-1074, i will be very grateful if any one provide me download link or upload it.
NaviFirm+ doesn't work for me.

best regards

has anyone upgraded there device to build 10572

can anyone tell me whether astoria works with latest build 10572. Which has best performance improvement than any other build