You can give this a try.
Read a little about it here: https://bitcointalk.org/index.php?topic=5143544.0
Website for the same: https://z-pay.io/

Download the QT wallets from the github page of the coin itself.
There are many clones of wallets in the wild and downloading even one incorrect can make your system susceptible.

Make a text file with all the private keys of the remaining small coins and then encrypt the text file with notepad++ and nppcrypt.
This will provide an extra layer of protection.

Did you flash modified bios in your cards?
After updating the drivers, did you patch it using ATI Pixel Clock Patcher for AMD?

I'll recommend removing two cards which are not working and then trying with just the two cards. After they work fine, then cycling it with the remaining ones.

As of now, there seems to be no active exchange with this coin listed as tradeable.
Even CE is shutting down which seems to be the last exchange for it. https://www.coinexchange.io/market/KOI/BTC

True that even I'm not able to find the review for VEIL on the proof of review website but their twitter handle clearly has a tweet for the same. So, I guess, it's better if we ask proof of review website for it.
https://twitter.com/ProofOfReview/status/1093575247750676481

As ASIC is the territory of the Scrypt algorithm so there won't be any pre-fabricated Linux distros available which will support it out-of-box for GPUs.
Anyway, you can pick any mining oriented Linux distros such as
Simplemining OS
Hive OS (Link: https://bitcointalk.org/index.php?topic=2350786.0)
nvOC for Nvidia (my personal favourite, Link: https://bitcointalk.org/index.php?topic=5129295.0)
and install the required miner for the same.

If not the above, just do a barebone Ubuntu installation, install drivers, download miner and start hashing.

Yes, it is just an indicative number.

To find a block there are a few parameters depending on it:
1. Block time (BT)
2. Total Hashrate (TH)
3. Your Hashrate (let's say this 'x')
4. Luck

Now, the time to find a block with x hashrate is : (x/TH) * BT

But that time is just an estimation.
For explanation sake, let's say with your hashrate it takes 4 hrs to mine a block but it could take more or it could take less than that.
Now here comes the factor of luck, if you are lucky you may hit blocks successively under the estimation time and your luck will be above 100 for that time period.
If it takes more time to hit blocks then it will be less than 100 for that time period.
But on a larger time scale like a month, the luck parameter will average out to be around 100%

Now about your question for work saved. The work is not at all saved and it will start calculating hashes again and it may take the estimated time to hit the block.
I definitely recommend watching this video for a better understanding: https://www.youtube.com/watch?v=bBC-nXj3Ng4

It's the classic demand vs supply problem bud.
The requirement of hash rate to be profitable for all the coins that support RandomX is low whereas the supply of the hash rate for it is quite high as there is seriously 10 to 40 times more CPU miners then GPU miners which is really good for decentralization but not so good for profit now.

So, until and unless big coins like Monero and others make a successful switch to it. We're going to need to hang tight for the same to be profitable.

Do not forget to keep your secret key safe for Google Authenticator too.
Just save them in a text file and then encrypt it with notepad++ and nppcrypt.
Archive the file too if you want another layer of password protection.

Also, do not root your Android phone or Jailbreak your iDevice where you are going to install the trading application.
It literally makes the smartphone so susceptible to malicious programs.

NOTE

If your RX580 cards have dual bios then you are fine and have a secondary backup if things go wrong with flashing bios.

If not please check this out.

I did not keep a backup of original bios for my RX 580 and RX 570 cards. So, I wanted to revert it back to original bios before selling them.
This is where I hit a major problem. I downloaded which seems to be original bios from the techpowerup website.
I flashed the bios in 14 of RX 580 cards and 2 of RX 570 cards.
10 of RX 580 cards were all fine and working perfectly which I sold but the remaining cards are all soft bricked and I am still trying to revive them.
I have 6 cards of this series that is non-functional now just because of not keeping the original bios.

Please don't make this mistake that as I did.

Here is my thread for the same: https://bitcointalk.org/index.php?topic=5181747.msg52358708#msg52358708

This is my story when I was in the same situation as you are right now.
After the bubble burst, followed by not so good profits for a year, I made a decision to stop and just sell everything that I can but I hit the same roadblock as you.
I saw many people who were already selling their rigs but people who bought second-hand GPUs were reluctant to buy cards that were used for mining.
So, I switched to the second step here. I started selling GPUs one by one after cleaning them up, testing them rigorously and then selling one by one.
Let me tell you, it's such a time-consuming process but it was worth it as they were selling and I was getting a bit better price then I would have to sell the rig completely.
It also helped that I kept the boxes, all the original items and also that cards had 2-3 years warranty left on them.

It's been eight months now and I have cleared around 90% of my inventory already.
I sold GPUs mainly to gamers, motherboards and CPUs combo to people who want cheap PC for office work, PSUs to enthusiasts and so on.

It takes time but It will be done and I must tell you, start today because in time the older GPUs will lose its value very quickly.

Bitcointalk username: MATHReX
Bitcointalk profile URL: https://bitcointalk.org/index.php?action=profile;u=1008386
Amount of earned merit in the last 120 days: 9
BTC Address: 1KrLFo8g5JPEF6mEHX5Y8tber4ZmypD1s1

Bitcointalk Profile Link- https://bitcointalk.org/index.php?action=profile;u=1008386
BTC address- 1KrLFo8g5JPEF6mEHX5Y8tber4ZmypD1s1

#Report Week 2

1. https://bitcointalk.org/index.php?topic=5180427.msg52383798#msg52383798
2. https://bitcointalk.org/index.php?topic=5181747.msg52383744#msg52383744
3. https://bitcointalk.org/index.php?topic=5181747.msg52374131#msg52374131
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8. https://bitcointalk.org/index.php?topic=5180427.msg52358813#msg52358813
9. https://bitcointalk.org/index.php?topic=5180553.msg52358767#msg52358767
10. https://bitcointalk.org/index.php?topic=5181747.msg52358708#msg52358708

I'm using Adrenaline Drivers 19.5.2 and OverdriveNtool works fine with my Vega 56 flashed with 64 bios.


That's an amazing hash rate for a RX 580 but the power consumption can be reduced a bit. I had my RX 580 do around 30 MH/s with 75W in claymore.
Just reduce the core clock & core voltage as much as you can & reducing memory voltage without affecting hash rate is the way to go.
Also check for the ASIC quality in GPU-z, this will provide you with a rough estimate as to how aggressive undervolt you can do with the card.

It's the only thing that I haven't tried.
I'm going to get a basic tool kit for soldering, watch some video tutorials as to how to get started with it and try the 8 + 1 Pin method again and hope that it will work.
If I can save even two cards out of the three bricked cards. I've going to be happy about it.

I'll keep that in mind but I'm not able to get the card detected at the first place.
I tried 8 + 1 Pin short method, DOS flash method but it always throws the same comment, "Adapter not found" thus GPU not being detected.

You have v2 cards of the same model where all of them had two bios, gaming + compute.
I have v1 cards which are pretty old and doesn't feature dual bios in any of the model series.
This is the picture of Sapphire RX 570 4GB Pulse:


This is the picture of Sapphire RX 580 8GB Pulse:


None of them have dual switch bios, if they had, I would have been so grateful.

I tried the 8 + 1 Pin Method to get the card detected in Windows or in DOS.
I didn't have any success with it though.
The card just doesn't detect and there seems to be no way to force flash until and unless the card is detected.

You're absolutely correct.
The card is not being detected in the DOS too, with ATIflash it just says adapter not found.

Please send the instructions, I am more than willing to try anything at this point to recover the cards because now I'm facing this problem in two more of RX 570 cards.