The files look correct to me. I have 5200SEs and a 5200HCSE and my firmware files are the same names as yours except, as you would expect, you have a 7 where I have a 5. Of course, we are just talking file names here. Can you get the centre channel firmware again from your source in case it has become slightly corrupted in transit?

Cinema/Music: Trinnov Altitude32 8-16,218,Cloud 4 channel, Marantz UD5007,DSP5200SE(2+C),DSP3300(4),DSW(2),271,MShort Ceilings,AppleTV 4K
TV: Marantz SR7013 Wharfedale Diamond 9x4+Celestion(C)
Music: Roon,i7NUC8gen,QNAP TS253A, Sony Scala, MS200, Garrard DDQ650,Wharfedale Diamond 12.3
Kitchen: AD88 (bluetooth via i80).