for share tested solution to unbrick n910f with memory i share this file in this there copy for memory 16gb file have 4gb and Win32DiskImager to release memory card
i use 16gb scandisk ultra class 10
https://www.4shared.com/zip/lKERcBQN..._SD_image.html
1- create scd
2- put sd card to phone without battery
3- put battery
4- put cable charger to phone and wait
not touch any key
thans everyone