3 beeps ram msi b450 gaming plus max

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Hello. A month ago I assembled my first PC with the following specs:
MSI B450 Gaming Plus MAX ( bios version from 7.11.2019)
AMD Ryzen 5 3600 (stock cooler)
HyperX Fury Black 2 x 8GB DDR4 3200MHz CL16 Dual Channel Kit
Seasonic Core GM, 80+ Gold, 650W
SSD Kingston A2000 500GB PCI Express 3.0 x4 M.2 2280
Hard disk WD Blue 1TB
MSI GeForce GTX 1660 SUPER VENTUS XS OC

Since I've built this PC, I had a few crashes that ended up in a black screen and 3 beeps from the motherboard(with the debug led staying on at the RAM section) that made the system unbootable untill I reseated the RAM(took one stick out and booted on single channel and put it back in afterwards).
The first crash occured one week after I've enabled XMP at 3200 MHz on dual channel while I was archiving a 2 GB file. The second one occured one week after I let the RAM at 2400 MHz while a game was loading(Rise of the Tomb Raider), but only this time it wasn't necessary to reseat the sticks. The third one happened more than 2 weeks after I've enabled XMP at 3000 MHz while I was playing GTA V, and that was a few days ago.
Since this PC came to life, I've done some tests with memtest86, some of them more than once(dual channel 2400 MHz, dual channel 3200 MHz, single channel A2 slot 3200 MHz, single channel B2 slot 3200 MHz) and none of them had errors.
Right now immediately after enabling XMP at 3200 MHz in bios in dual channel, the 3 beeps would occur again with the debug led on at the RAM, but on single channel(the state in where I am now) in A2 slot at 3200 MHz there is apparently no problem.
Maybe I wasn't fully concise, but all these crashes occured while I was on dual channel. In single channel I haven't encountered yet these 3 beeps.
This kit of RAM appears on the QVL of the motherboard, and I hope that a bios update might solve this issue. However, I am a little hesitant because I haven't done a bios update before. It would be ideal if someone encountered similar problems with this mobo-ram combo that I have to see if it's necessary to update my bios or not.
I really need your help. Thank you.
 

Svet

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Can you tell the exact BIOS version that board is using?
Have you tested each one of the memory sticks separately?
 

Svet

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It only only crash when you use both memory sticks at the same time?
And when you use either of them separately, there are no crashes?
Is this correct?
 

Svet

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then put single memory stick, reduce memory freq. to make system stable
and reflash to the latest BIOS
then see how its goes
 
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Ok, thank you. I'll let you know once I will install the latest bios. Anyway, I assume I don't have to install the beta version, but the latest full release(7B86vH6)
 

Svet

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I would suggest to go for latest version [beta] directly
 
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Ok, so I updated the bios to 7B86vH6 and I had a freeze on dual channel at 3200 MHz as soon as I had entered in GTA V, and after a forced restart the 3 beeps could be heard again.
I took one stick out and I booted successfully on single channel and the game didn't freeze on XMP enabled at 3200 MHz.
 

Svet

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try set it to 3000MHz or 2933MHz and retest when you use both sticks.
 
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The thing is that now in bios both XMP profiles are the same at 3200 MHz. Maybe I should set the frequency manually with the ryzen dram calculator?
 

Svet

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Disable XMP and set memory freq. manually.
 
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Apparently, now I can't even boot on dual channel with the default frequency. I've just put the stick back and the 3 beeps occur again.
 

Svet

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And single either of them still boots fine every time?

Does those memory stick are matched memory pairs? one kit
EDIT: You answer that in the 1st post. ignore the last question.
 

Svet

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