Apple Apple iMac 27" Late 2013 (820-3481-A)

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Apple iMac 27" Late 2013 (820-3481-A)
j17_mlb.pdf
820-3481-A.brd

 

[shashi bhushan kumar]

820-3481-A Booting problem.need ok bios

 

[ThienBui]

820-3481-A Booting problem.need ok bios

many bios above

 

[shashi bhushan kumar]

not working .please attach ok clear me bios

 

[ThienBui]

not working .please attach ok clear me bios

https://vinafix.com/resources/how-to-clear-me-region.1188/

 

[shashi bhushan kumar]

not useful.please attach ok clearme bios

 

[shashi bhushan kumar]

not useful.please attach ok clearme bios

 

[ThienBui]

not useful.please attach ok clearme bios

how is clear me ok? You need to provide details and old bios if available

 

[shashi bhushan kumar]

how is clear me ok? You need to provide details and old bios if available

 

[shashi bhushan kumar]

this bios mac installation problem.but windows 10 installation not problem

 

[ThienBui]

this bios mac installation problem.but windows 10 installation not problem

problem wht? here not problem bios

 

[shashi bhushan kumar]

mac installation problem.hang apple logo.

 

[ThienBui]

mac installation problem.hang apple logo.

try file this

 

[Madhav Karmacharya]

pleases unlock my bios ufi password

 

[ThienBui]

pleases unlock my bios ufi password

 

[DoctorMob]

same here with all DUMPS Stuck at Boot Loader can't acces any installer or Partition

 

[ThienBui]

same here with all DUMPS Stuck at Boot Loader can't acces any installer or Partition

Does it have anything to do with the BIOS?

 

[DoctorMob]

Yes.
after Catalina Update no response.

Its a EMC 2639 Intel Core i7 4771

 

[ThienBui]

Yes.
after Catalina Update no response.

Its a EMC 2639 Intel Core i7 4771

can make one video? i need see detail

 

[DoctorMob]

Please Clear ME

 

[ThienBui]

Please Clear ME