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Asus Z97-Pro (WiFi ac) bios update fail

trodas
Level 9
My Asus Z97-Pro (WiFi ac) have bios v2303:



So I load the new bios (all the more recent bioses anyway) on USA flash:



I picked up the latest one (v2702) and tried...



...to upload it, then I get "not a proper BIOS" message:



NONE of the bioses I tested (v2401, v2501, v2601 and v2702) worked. All I download directly from Asus site:
http://www.asus.com/cz/Motherboards/Z97PROWiFi_ac/HelpDesk_Download/
...so could SOMEBODY tell me, what is going on?!



Next thing - let's try the mainboard function of USB BIOS Flashback - I put into the proper port (page 2-14 "bottom port supports USB BIOS Flashback") USB drive with file in the root directory, renamed by the BRenamerl.exe utility to "Z97P.CAP")

After power up, I hold the BIOS_FLBK button for 3+ seconds and I expected to see 3 blinks of the LED and beggining of the flash proces, but ABSOLUTELY NOTHING HAPPEND.



The last attempt to flash bios update on Asus Z97-Pro (WiFi ac) was my attempt to boot from USB flash. Formated as DOS bootable device (or DrDOS) and in both attempts failed. Even afer disconnecting both SATA devices (HDD + DVD).



So the mainboard works, but it did not see the Samsung SM951 (MZ - HPV1280) M.2 128G SSD is not seen as device in bios or HDD prep programs like Mini Tool Partition Wizard Pro. Any help is need:



...perhaps it is just me, doing something wrong?
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trodas
Level 9
Bios updated. I completely forget, that my mainboard is not "Asus Z97-PRO (WiFi ac)", but a "Asus Z97-PRO (WiFi ac)/USB 3.1" and that means, that I tried different BIOSes. Witch end up with the "impossibility to update" the bios.

Now I running at bios v2702, yet the M.2 SSD (Samsung SM951) is still "not present" in bios, or for HDD prep program (Mini Tool Partition Wizard Professional) or visible for Windows 7 install:
http://rog.asus.com/forum/showthread.php?81308-Asus-Z97-Pro-%28WiFi-ac%29-not-see-my-M-2-SSD-drive