Hey alece

I tried that way to go to FDU mode but it didn't work out. I mean , i got nothing. Then i tried other method as below but it didn't work either.Bytheway my modem firmware is 05.13.04. do i need to upgrade it to higher baseband. Any other way to do so except apple store as the last resort

TO ENTER YOUR IPHONE INTO DFU MODE IF POWER / HOME BUTTONS ARE BROKEN

#1) Download the iOS firmware that corresponds to your device.
#2) Rename the extension of the file that you’ve just downloaded from .ipsw to .zip.
#3) Unzip / unpack the file (yes, those .ipsw firmare files are in reality just zip files!)
#4) Browse to the directory Firmware\all_flash\all_flash.m68ap.production. There you should see a file called LLB.m68ap.RELEASE.img3. Erase it. There’s also another file there called applelogo.###.img3 (the ###’s are uniue to your device) – this file should be renamed to LLB.m68ap.RELEASE.img3 (the name of the file you’ve just erased).
#5) Browse to the directory Firmware\all_flash\all_flash.n82ap.production. Locate a file called LLB.m82ap.RELEASE.img3 and erase it. Again locate the file applelogo.###.img3 (the ###’s are uniue to your device) and rename it to LLB.m82ap.RELEASE.img3 (the name of the file you’ve just erased).
#6) Save your updated zip file.
#7) Rename the zip file’s extension back from .zip to .ipsw.
#8) Open iTunes.
#9) inside iTunes hold down the “ALT” button and click on “restore”.
#10) Select the .ipsw file you just worked on and let iTunes to its work