Hi,

Thx, I tried all of those tools, none did change something in my bios (the Tool for Intel Chipsets and the older afudos version give an error)
Afuwin and afudos with /GAN tell that everything is erased and programmed, in fact nothing is done. Also the programming is way too fast, so it definetely not working.

I will try some more smaller USB sticks and give flashback again a try. I don't expect much, because my 2 GB stick formatted with FAT32 is not accessed at all by flashback, when you try to read something from the stick under Windows you see a red light, The stick is quite slow, so it is easy to see. There is no right led on the USB stick during flashback procedure, it's the same with all my other USB sticks.
Also tried just for fun a 500GB USB 2.0 harddisk, with USB flashback, it is simply not powered up (There are white leds that glow when the harddisk has power).

The wAsusFU did not work either? GAN is not necessary always with that, but can also be used there too.

Flashback works, and works well, but you have to find compatible USB stick. Usually smaller/cheaper is better, sometimes 128Mb-512MB work better than 1-2GB, above 2GB you have to get really lucky for that to work
Flashback with HDD USB probably never work, even if you powered the HDD with another system, due to compatibility with normal USB Sticks is hard to find sometimes I doubt it would ever work with USB HDD

Both chips now programmed and working anyway, correct? I assume so since one of your later posts you said you finally hot swap flashed it, maybe only a waste of time to keep trying until you get more cheap USB sticks (Order a bunch of different 99 cent ones on ebay)
Or just order $3 CH341A flash programmer from ebay and never have to worry about any of this again.

Yes wAsusFU does not work either, it gives something like:
>wAsusFUX64.exe 99xevor2.CAP /P /B /K
======== ASUS Flash Utility Ver 1.13 for WinPEX64 ========
2018-10-09 17:19:28
Get Flash Information : PASS
Get Rom Layout from Rom : FvReadFileNonCompressFromRom Failed
FAIL
2018-10-09 17:19:30

Return 255

You are right, I stop trying to flash it with software, so I try with some usb-sticks from friends, will try with a 512MB and a 256MB stick, let's see

Yes, without programmer, best thing to do is find a compatible USB flash drive. That way you're not forcing anything to be flashed incorrectly.

Hi again,
I already got the 512MB stick, no chance to do a flashback. I formatted it with FAT32, put my modified 99XEVOR2.CAP on it.
The flashback LED on the mainboard flashes several times, and then lights permanently.
I alreday wrote it, I think flashback is simply not working on my board, because the stick is not accessed (when you read from the stick the led on the stick is on). Also could be that the Flashback USB port on the mainbaord has a problem.
I will also try the 256MB, but I don't believe something will change.

So I shall go and buy a programmer. I do not like this option, because I am sure, that I will use it only this single time, so it's weird to order something from China, .....
What CH341A do you recommend?

Or maybe I let it program again and order a chip, that's 14.50 EUR incl. shipping, then I have 3 Bios chips for this mainboard, lol

That means USB not compatible, or no BIOS found on the drive. Is the BIOS in the root of the USB, not in any folder?
Sometimes you have to try lots of USB, I went through a pile one day for one board, then next time I needed it all those worked on a different board, so it's all up to what USB compatibility is programmed into the BIOS/board already.

Flash programmer only costs $2.50 on ebay, purchase there so you don't feel like you are wasting money. Don't feel weird buying cheap things from China, I purchase cheap crap there all the time, sometimes even items costing $0.50 to $1 shipped by themselves, I don't know how they do it and make money, but I get the items eventually.
You might get lucky and only need this one time, but I doubt it, since you want modified BIOS you may find it useful all the time, plus you will never have to worry about bad BIOS flash again you'll always be able to fix if a flash goes wrong.

I recommend any of the $2.50-3.00 ones on ebay. You have two working chips now, no need to order a third? Yes lol
If you want to pay more $$ and get a kit with cables, that you can use on other boards where BIOS might be soldered to the board, you can get cheap kit like EZP2010 or EZP2013

Yes, only one file was on the stick, no folders. Stick is not read.
You wrote "so it's all up to what USB compatibility is programmed into the BIOS/board already."
The existing Bios can't have to do with it, or is the Arm processor using the Bios??? The Bios is for the x86 CPU only. The USB flashback thingy shall work without CPU, RAM, .... Well I cannot really tell, because I have never seen it working :D

I am going to order the programmer now.

I have only seen USB Flashback work without CPU on modern Intel based boards, I do not know if it works that way on older Intel or AMD Boards, CPU may or may not need to be installed, but the process has nothing to do with using the CPU.
Flashback is part of the BIOS, and any/all compatibility built into it is either stored in the BIOS itself and or another chip on the board.

Once your programmer arrives all your headaches will be solved.... Which I assumed already were since you have two working BIOS chips now?

Hi,

OK, I received the programmer today, I ordered one with an USB cable.
Can you help me to get it running?
I installed some drivers (I am using Windows 10 x64), but I guess the driver installation is not correct.
When I start "CH341A programmer" or "CH341A programm v1.29", both programmers say No device connected.
Do I need to enter a chip before I start the program?
There are 3 possibilities to enter the chip: One from the first program, second possibility from the 2nd program, 3rd possibility what is printed on the board....

Also there is a Dip Switch 5V or 3.3V, which is right?

Hi again, actually posting this picture was a very good idea :DDD
Both Dip switches were set into the other position, so 5V and TTL. 3.3V and the chinese character (like in the picture!) worked better, the programmer got recognized....

I flashed the chip, now testing :)

@CoffeeOne - You want 3.3v not 5v, for next time around Glad you were able to get it flashed and are up and running, sorry I missed helping while you figured it all out.\

Thx @Lost_N_BIOS for helping so far, I need now some support to get my harddisk clone running. I will create a new message. :)

@Fernando I can also confirm that it's impossible to flash a modified BIOS on an Asus M5A99X EVO R2.0, when the "Asus flashback" feature does not work.

@Fernando I did not want to say that the feature does not work at all, I only wanted to say that ***I*** am not able to do it on my board, with the USBs sticks I have available (tried 5 different sticks).
Can you give me some hints to clone my existing Windows 10 installation, please see my latest post.