Continuing the discussion from Rambam’s Mishneh Torah: Printed Editions and Critical Edition Projects:
There is the Boedelian Manuscript. which can be viewed at Bodleian Library MS. Huntington 80. Although it only has Mada and Ahavah. But folio 165 recto (דף קס"ה ע"א) has this:
Look at that last line: הוגה מספרי. אני משה ברבי מימון זצ"ל (Corrected from my book. I am Moshe ben Rabbi Maimon zt"l (as his father had passed away by then)!!!
That’s pretty authoritative. And the Frankel edition used it as his primary source for those two sefarim. Although if it was far from the accepted text, they would put the original in a footnote.
There is an illuminated Renaissance manuscript by a sofer named Gedalia in 1457 in Northern Italy. The first 5 sefarim (Mada - Hafla’ah) are kept by the Vatican and can be seen at DigiVatLib . The second volume (Zer’aim - Shofetim) is jointly held by the Metropolitan Museum of Art (“the Met”) and the Israel Museum DigiVatLib
Famously, there is a beautiful R Chaim on Hil’ Shekhenim 4:2 where once you see Yemenite and early Spanish manuscripts was all based on a typo. Anyone who has the details – please fill them in.