too many people have Innostor flash memory
and so many people emailed to me and have this problem
some ic «eml3020» is crashed and usb is not worked
eml3020 is dc to dc convertor
Innostor like a very old flash havent inside voltage convertor
as we know nand flash used 3.3 volt
but usb voltage is 5 volt
some flash like 2251-50 or other have dc to dc convertor but Innostor used em3020 to create 3.3 volt
— ok
lets test rule
use multi meter
1-is 5 volt fuse safe? ok go to next level
not ok > change fuse
2-Between DP AND DM must multi meter show (900-1700 ohm )
if not show change dp and dm fuse
3-test L1(Fuse)
4-output eml3020 is 3.3 volt?
if not
try find on old flash memory have 5 to 3.3 volt convertor
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