The A0 problem isn't just that the LED is wrong, but that the CPU fan controller sees that temp, freaks out, and pins the fan speed at 100%. This gets a wee bit loud.

just went back to 1.21 and it still won't boot with the xmp setting. pretty pissed now. 

Which is the better one to use? 1.20 or 1.22?

Hello, I possess a mobo z77 stinger and in spite of all your techniques to fall in love bios that this does not want to update, he(it) stays bios of January 29th, 2013, I wonder if the mobo is not failing, would have you a solution to remedy this problem

I tested since the office(desk) and here is the problem:
 

 
With this technique
 

 
 by respecting your recommendations the pc goes out and during the ignition nothing changed
 
And for the solution with the key usb during the boot on that this the computer jams on a line of command(order) " C: / " and I am obliged to restart
 
The mobo would have she(it) one problem technique? One thing's for sure, it is because I am really disappointed by the mark(brand)
Thank you in advance

Same here.  Will the bugs with this board's BIOS be fixed or not?

Today I went to update to the bios 1.22, was quietly, but there was a bug in the CPU temperature sensor, it shows me to 55C while the cores 35 to 38C, and the post led it shows exactly the same thing, the 55C would have any way to fix this?

Exactly.
Before the upgrade was between 20C to 25C at IDLE, and kept at 40 to 45C in FULL, so no overclocking.When upgrading the BIOS, it was 50C to 55C in stock on processor temperature. I believe that only the cpu sensor has a problem, because now overclocked to 4.5GHz v 1.3 is 65C in full, while in this 45C to 55C nuclei. This update 1:22 spawned some problem on the sensor of my cpu.
Thanks for the help.

I will make this test today and return here.I just download and run from 1.17? Can I downgrade without problems?
Thanks

HAZMAN_THE_GREAT

MatheusMoraes

I will make this test today and return here.I just download and run from 1.17? Can I downgrade without problems?
Thanks

No need to worry. Downgrading to back to an older BIOS will not cause any problems. The only problem you can get is if you update your BIOS wrong. But ya try doing that and tell us what happens. My temp sensor fluctuates up and down depending on the temp in my room. But I would not worry about the temp sensor anyways bud. The main thing is to worry about is if your post code read out is working properly. But honestly for me I have no issues whatsoever with  BIOS 1.22 I am still trying to figure out what could be the issue with other people. Like Vlada says a lot of people prefer BIOS 1.17. I wonder if it could be my setup? By the way do you have the latest motherboard drivers? I had a bunch of issues when I was using old board drivers. They were conflicting with the new BIOS updates. 

You know what's weird?
I did the installation at 1.22 bios bios 1 and the other, let the old bios. Upon returning to the other bios, kept at the same temperature: (Bought new fans because mine are bad, but I'm sure there's something on the sensor.

Hello, I always meet problems to update bios, I wondered if there is no incompatibility with Windows 8 or then my mobo is failing?

I am very disappointed by this mark(brand), I am going to have to acquire(buy back) a mobo asus which has never disappointed me in 12 years

Offering some feedback. Just bought my z77 FTW 5/11.
Bios 1.22. CPU Temp stuck at 111c LOL. CPU Core Temps fluctuate in the 30's idle.  This 111c temp reads this way in eLeet and Aida64. From within the BIOS the CPU Temp looks normal, low 40c range.
 
I think my CPU fan is max RPM due to this, so I'm thinking this BIOS needs to be repaired. I'm going to try 1.17.
-------------
Tried BIOS 1.17 and it had issues with my RAM's XMP profile, it also didn't fix the CPU temp at 111c, so back to 1.22.
It's a significant annoyance to have the CPU fan spiked at 100 percent, sure I could use the bios to set it lower, but I'd loose the higher speeds when needed.
 
I have a registered copy of Aida64 and shot them an email, perhaps there is something they will understand about this sensor which I can relate back to EVGA if it'll help them any.
 
New BIOS please to fix this, apparently other people are having this issue too. Perhaps set the JCPU fan control to CPU Package instead of the motherboard sensor?

----------------------
5/20/2013
Powering down and turning off the PSU then cycling again fixes the stuck CPU Temp sensor :)
It happened again, but cycling it this way works.
 
----------------------
6/4/2013
I thought I'd follow up on this because I found out what was causing the 111c CPU issue for me...
 
BIOS 1.22: I was UEFI booting Windows 8, it was very unstable as the motherboard would forget it's association with the UEFI boot disk, Doctor Debug would be stuck on A0, and often the CPU sensor would stick on 111c requiring I power off my PSU (not just a system shut down) and back on again to clear it. The Windows 8 UEFI boot is simply not functional on this mobo with this BIOS.

I bought an SSD and moved my OS to it and boot legacy MBR style (not UEFI), and all my issues went away. No more CPU sensor stuck in the last two weeks, no Doctor Debug stuck at A0, no system issues what so ever.
 
Happy with my Z77 FTW!

I upgraded a while back in hoped it fixed the sleep issue too. However I have come to find it does not fix the problem. Next Bios coming soon EVGA?

Sleep mode fixed would be great for when I am sleeping 

1.22 is the only version that my XMP 1.2 profile works on :D
 
Yeah, I'm new to this mobo, and it's taken time for it to sink in...
 
BUGS!
 
Still the best PCIe layout for my video card & disk needs :)

Everything work for now, no complains. 
I wait to buy graphic card than I will OC little 3770K.
Not much 4.5GHz. 
Who would not to trade for Z87, but nobody is such crazy do that.
Do you see Z87 Classified and features???
She and new worth more than our new. 
I hear complains about Haswell OC, temps are lower, that is good.
Only if Haswell OC like Sandy Bridge people will forget everything and less performance increase. 
I hope that for OC is not true, at least as our. And IB is OK overclocker If you ask me.