ELF64 file is recognized as bios file

[oddcoder]

library_book.zip

➜  ~ r2 library_book
[f000:fff0]> i
type     bios
file     library_book
fd       6
size     0x4f97c
iorw     false
blksz    0x0
mode     -r--
block    0x100
format   bios
havecode true
pic      false
canary   false
nx       false
crypto   false
va       true
bintype  bios
class    1.0
arch     x86
bits     16
machine  pc
os       any
minopsz  1
maxopsz  16
pcalign  0
subsys   unknown
endian   little
stripped false
static   true
linenum  false
lsyms    false
relocs   false
binsz    326012

[f000:fff0]> 

This file is packed with UPX then manipulated