APR-5000 series firmware version descriptions and checksums
RLH   revised 2012-09-19 
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APR-5003V Recommended Version as of 2012-09-18
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From RLH incl Checksums 2012-09-18
from APR5003V  11006   Chips have a copyright 1994 date

As of 2012-09-18, this is the candidate for the best firmware
for archival (including 3.75 in/s) transfer machines.

apr5k3v_(dot)_6_cpu_6be3_ic14.bin     003B6BE3
apr5k3v_(dot)_6_cpu_5c89_ic13.bin     001C5C89
apr5k3v_(dot)_4_lnt_70ce_ic13.bin     001E70CE
The two CPU chips will register on boot-up as P4.02.01.6
There is no easy way of figuring out which LNT chip is there as there
appear to be two versions of P1.01.01.4 LNT ePROM.

While 5003V 10908 had a "rogue" LNT version (see below) the CPU PROMs 
had the above versions. Replacing P4.02.01.5 CPU software and 
P1.01.01.3 LNT firmware with the above three chips solved the 3.75
in/s issues in 11522, but not in 10908.
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ARCHIVED IMAGES in ARCHIVE FOLDER Not for normal use.

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APR-5003/5003V Other Versions
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From KC 2009-05-25  checksums by RLH  2012-09-18

P402015-E.Bin                         003F47A9
P402015-O.Bin                         0021DD10
These two matched the pair in 5003V 11522 and a 1989 set from a
salvage CPU board
P4101013-LNT.BIN                      001E9368
I think this filename is a typo and should be P101013 w/o the 4.
The 9368 checksum matches a P101013 we were able to read from 
salvage boards. The version in 5003V 11522 was not reliably readable!

The two CPU chips will register on boot-up as P4.02.01.5
This was the most recent chip set listed in Tech Bulletin 90-084
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From RLH 2012-09-18  This is from an old machine -- 5003 Dated 1986

apr5003_p301010_cpu_e3ed_ic13.bin     0037E3ED
apr5003_p301010_cpu_a05f_ic14.bin     004EA05F

This was the initial release P3.01.01.0 of the Time-code specific
machines.
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From RLH 2012-09-18  This is from a P4.02.01.6 machine, 89C 10908.

apr5003V_p101014_lnt_7CCE_ic13.bin    001F7CCE
As of 2012-09-19, this is the only piece of "rogue" firmware we have
found...in other words a piece of firmware with a revision ID that 
matches another revision ID but the checksums do not match. I am not
certain if this is a "running change" release OR it's a defective 
PROM chip.

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APR-5001, APR-5002  Believed to be latest for non-timecode machines
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From RLH incl checksums  2012-09-18  

apr500x_p401012_cpu_262b_ic13.bin     0037262B
apr500x_p401012_cpu_a9d2_ic14.bin     004EA9D2

This appears to be the latest for standard 5002
machines. There are several of these that are believed
to have come from 91B 5002 machines and one set is 
marked 1992 and its checksums match this earlier one 
we read. 

We are not certain which LNT firmware is required with this CPU
firmware. 

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LNT cards not specifically identified as to a machine
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apr500x_v-1-0_lnt_c000_ic13.bin       003FC000 (1985)
apr500x_v-2-0_lnt_1e5f_ic13.bin       00341E5F (1985) 
 (a second one had the same checksum, but a different-looking label)
apr500x_p101013_lnt_9368_ic13.bin     001E9368 (1989)
same checksum as P4101013-LNT.BIN