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Old 09-09-2017, 08:58
psgama psgama is offline
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So I came across another device and used the pattern that I noticed with the Differential of Device ID from the last valid number in the series multiplied by the prime number 857 Plus the valid Serial Number from the first device and I ended up with a valid serial number that worked!!

Now I just need to figure out how the original start point was arrived at.

My example was as follows
New Dev ID requiring licensing 1033123
Previous Dev ID: 1033109
Previous S/N: 8469534
Difference In Dev ID: 14
14 * 857 = 11998
Previous S/N Plus 11988 = 8481532 = Working code.

So I'm not sure what the scheme is here, I know there is a pattern, but I can't seem to find the actual calculation. I know that it may use part of the Software revision of the unit, as that is asked for when licensing is purchased.

In all of these cases the revision is 5.4.5

I have graphed the points I have so far with polynomial trendline to 6th order, but calculation gives R value of .9995 (Still too much error when dealing with 10,000,000 possible serial number)
Won't seem to let me add picture to show graph, but can be done in excel.

What more should I look for? Solution is partial and works, but the method to get to serial from scratch still goes unknown.
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tonyweb (09-10-2017)