I can not erase files on the micro flash card.
any help will be fine.

Is the MicroSD card write protected?
http://techchannel.radioshack.co ... rosd-card-1423.html

just me being dumb. the micro card adapter was locked.

srlbarn@frontie Posted at 2014-10-3 06:20
just me being dumb. the micro card adapter was locked.

Glad you worked it out!

Yeah, it gets me a few times too. The MicroSD doesn't have a hardware lock, but a standard sized SD (or an SD adapter) does. Plus, the way the lock slides, it's easy to accidentally lock it as you insert it into the SD slot.  Kind of a pain!

I t s for sure a problem of lock switch. Check also here http://www.drones.us.org/ you ll find a guide to this.