HP DC7700 CPU upgrade

[chris89]

Inspiron 530S's bios type was award bios.
I have extracted bios file and flash utility ,then i already injected micro code into it.
Here is download link:
https://mega.co.nz/#!ngoyHZbQ!DDw3DrHGK9...J1502kDS2Y

Feng

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Thank You!  Is there anything you can tell me about if support had to be removed?

Should I flash as normal through the dell standard flash utility I believe on DOS promt?

Thanks

[chris89]

 

[KSOUL]

hi, i have the same machine, the hp DC7700 converible minitower and i would like modd my bios because my core 2 duo E7500 run at 1,60ghz and no 2,93ghz. i would like change multiplier coefficient in the bios. can you help me please ?

[DeathBringer]

Post screenshots of first (CPU) & third (Mainboard) tabs of CPU-Z.

[DeathBringer]

As Ypu can see, another problem is native CPU run at half speed.

[DeathBringer]

It isn't microcode error. This verification is in the compressed part of the BIOS.
Sorry but I can't unpack it for modifying...

[DeathBringer]

But I don't know how unpack BIOS for HP DC7700 SFF
I've unpack it by hpdeco! I'm analysing results.

[DeathBringer]

I've found interesting code in HPBIOS.016 module (for BIOS v3.07). On error it set status number 0x16 (1802-Processor Not Supported).

Code:

A9C5 pushad A9C7 mov ax, 0E7h A9CA call 0B780h A9CD test bl, 1 A9D0 jnz 0xAA0Bh A9D2 push 254Bh A9D5 call 12A1h A9D8 cmp ax, 2 A9DB ja 0A9FFh A9DD mov ecx, 1A1h A9E3 rdmsr A9E5 bt eax, 12h A9EA jnb 0AA0Bh A9EC mov dx, 0FA0Ch A9EF in eax, dx A9F1 xor eax, 80000h A9F7 test eax, 80000h A9FD jnz 0xAA0Bh A9FF mov bx, 16h AA02 call 0FFFFh:7618h AA07 cli AA08 hlt AA09 jmp 0AA07h AA0B popad AA0D retn

Bad news that BIOS has a digital sing and can't be modified.

[DeathBringer]

chris89
Please check: can you downgrade to BIOS v1.15? It hasn't a digital sing.
Now I can patch the code, but I can't fix CRC

[Cocio21]

chris89
Please check: can you downgrade to BIOS v1.15? It hasn't a digital sing.
Now I can patch the code, but I can't fix CRC

So its the same with the dc7600 bios, can you look ? 

http://h20566.www2.hp.com/hpsc/swd/public/detail?sp4ts.oid=1110575&swItemId=ir_73174_2&swEnvOid=181#tab2

http://h20566.www2.hp.com/hpsc/swd/public/detail?sp4ts.oid=1110575&swItemId=PSG_I23450_108542&swEnvOid=181

Current bios on it is v1.06, but i would like to get at least that v1.54 in there, with support for Cpu´s too, or its just not worth keeping :-P

Chipset is 945G, so the board could at least support most 65Nm dual-cores @1066Mhz