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[Tutorial] Backport EA Titles with flatz's trick

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Tools Required:

IDA Pro or Ghidra with proper ps4 loaders / tools (i'll be using IDA Pro 7.x with balika's loader for this)
Hexeditor of choice (I Use HxD)
Flatz's required functions, They are as follows:
7CxI50-xlCk
+OnbUs1CV0M
xmhnAoxN3Wk
pMxXhNozUX

sometimes they have underscore behind them so:
_7CxI50-xlCk
_+OnbUs1CV0M
_xmhnAoxN3Wk
_pMxXhNozUX

eboot of the game you want to fix (for example fifa 20) in ELF format, NOT FSELF!

The process:

Load your eboot with IDA and balika's loader, the process will be similar to this

spacer.png


when it finishes loading go to the pink area at the bottom (the nids) under functions window
spacer.png

patch all these

from
spacer.png
so ff 25 72
ff 25 6a
ff 25 62
ff 25 5a

to 31 C0 C3
spacer.png

apply and your EA Eboot should work properly together with 5.05 backport tools

this concludes the tutorial

Credits:
@flatz for the original discovery
@Joonie for the implementation and POC in the scene

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so how can we do this via CMD? ill add this to my tool

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https://github.com/balika011/belf/releases
no links for pirate content
has to be done manually

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Posted (edited)

Nice Work, this isnt easy. I did tried this on NHL20, sadly I've prob missed some stuff 😕

Edited by LeJoKeR

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Just followed the Guide(nice tho), sadly there's no functions as listed, not event close (I tried many ways to wirte them)... 

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