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RBE cannot open my Radeon mobility 4300 bios

Jul 28, 2009
6 (0.00/day)
Hi there,
I'm trying to use RBE to mod a radeon ROM file i've extracted from the main BIOS from my laptop. It's an Oprom uncompressed file.
I've attached the file (rename it .rom instead of .pdf).
It's coming from an MXM Radeon HD 4300 card. I wanted to modd the frequency, but when i open it with RBE, it tells me that there's something wrong.
But it seems it can detect it but it will just end with that msgbox:

If you can help me thank you.