Does this rom fix the book8088 being randomly off by a column in text mode?
The copyright statement that prints on boot and indicates that it is licensed under the GPL has been stripped, violating section 4 and 5.d (now claims to be "Copyright (C) 2022 CYCLE Logic" with no mention of "Copyright (C) 2010 - 2020 Sergey Kiselev", and with no mention of the GPL).
If you do request the source code from them, to their credit they do give it to you, but they code the give you has all (edit: most) of the copyright header-comments removed (violation of section 5.b).
And generally, in neither the binary nor the source code indicate that it's based on book8088 (violation of section 5.a).
They'd definitely sell more, not less, of these book8088s if they credited the bios and used upstream's source.
Particularly now that upstream directly supports the device.
I'm not sure the BIOS can help much.
The scan converter in panels often guesses "wrong" about modes. If one could change the firmware for it, that would help.