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Well, the points you told are looks frightening. So what If doing same when Zen3 enabled B450 BIOS comes? Will they not work on B350 anymore? I also heard some B350 boards just accepts B450 BIOS and run it without any issue. Since they don't gonna changed but copied as block, will it still need to re-sign those? If it's not possible due cryptographic keys held by AMD, this is another story.ĪFAIK those signatures just for protecting whole modules integrity (might be I am mistaken). I though I can purchase a 4650G APU, copy microcode and OROM sections to my BIOS and it gonna work. Couldn't we copy AGESA from A bios to B bios easily? I don't understand why it's needed to work on every piece of bios. Why copying Microcode and OROM sections alone does not make the trick? So doesn't it easy to copy 4000G and 5000G APU support from this BIOS to B350/X370 series? (this is for A300 BIOS) for example using UBU? The board will need to have a >32MB Rom Chip, unless you are very talented & can do it by cutting stuff outĬlick to expand.The BIOS you ask is here: It's 'possible' if you want to invest a lot of time Winraid (search for Lost_In_Bios, the person's posts to learn) & 1usmus Tutorial Easy moding is with AMIBCP, correct transplants is with the tools above.Have an SPI Flasher on hand and figure out the structure.Keep in mind, not only PSPFirmware has signing headers, but AGESA has an own public key too.Have a Hex Editor, use Cutter & Uefi Bios Editor to decrypt Bios Structure and direct editting after knowing HEX and GUID module location.

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Use UefiTool to figure modules out or get familiar with Cutter or Ghidra plus EFI plugins (Cutter is great but like IDA, complicated).

Get microcodes out with UBU-Tool, and modules you want.

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PSP section out and check with CyReVolt PSP Analyzation Tool (OrangeCSM) Analyze and compare with Mimoja MKL Tool.Decrypt the bootloader and generate AMD unlock keys with PSP Tool.Visualization of PSP Firmware, Deconstructed ( ) UBU Tool~ Uefi Bios Updater 'UEFI BIOS Updater' (UBU)ĮfiSeek - IDA / Module Analyzer - sadly only Ghidra I succeeded in removing legacy ROM and network uefi modules.Click to expand.Can you share this Bios maybe ?īased on Ghidra and Radare Combined Decompile GUI Tool

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The point is the total Bytes Free at the end of the report. I have sent report to Stasio using TweakTown Forum PM, and hope it will be corrected soon.Ĭlick to expand.I saw this too when i tried with z68xp bios. That's why some GB files are having debug-message about intersections in version 0.7.0. The current setup is dangerous by security means (Descriptor, GbE and ME regions are accessible, because they are parts of BIOS region now), it breaks Intel specifications, breaks normal use of FITC utility and simply damn wrong! This setup will have no unallocated space in SPI chip and no intersections between flash regions. So, the right values for BIOS base and BIOS limit should be 0x0200 and 0x07FF respectively. BIOS region starts at offset 0x0000 and ends at 0x800000 (0x7FF + 1)* 0x1000, which is obviously incorrect!īIOS regions should start at any offset between 0x200000 (end of ME region) and 0x250000 (begin of first firmware volume in image file) and end at the end of image file at offset 0x800000. ME region starts at offset 0x3000 and ends at 0x200000 (0x1FF + 1)* 0x1000, which is correct.ģ. GbE region starts at offset 0x1000 and ends at 0x3000 (0x02 + 1) * 0x1000, which is correct.Ģ. So, this region map says to us (and to chipset logic too, if flashed to SPI chip as is) that:ġ.

Orange - upper bytes of BIOS region limitĭark-blue - upper bytes of GbE region limit If you don't familiar with structure of Intel descriptor region, here is an annotated HxD-screenshot of affected part: During the debugging of strange behavior of using UEFITool with Gigabyte BIOSes, I have found either a bug or a special non-standard region map configuration in all recent Gigabyte BIOS images.

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