Forum RSS Feed Follow @ Twitter Follow On Facebook

Thread Rating:
  • 11 Vote(s) - 4.64 Average
  • 1
  • 2
  • 3
  • 4
  • 5
[-]
Welcome
You have to register before you can post on our site.

Username:


Password:





[-]
Latest Threads
overclocking msi b150 gaming m3
Last Post: J1419
Today 05:51 PM
» Replies: 0
» Views: 30
Asus K72jr repair
Last Post: Moddo73@PROXIMUS
Today 02:08 PM
» Replies: 0
» Views: 34
[REQUEST] Lenovo Z50-70 & Z40-70 (9BCNxx...
Last Post: Dudu2002
Today 01:29 PM
» Replies: 757
» Views: 319819
Excalibur G900.1160 BİOS unlock request
Last Post: Dudu2002
Today 01:28 PM
» Replies: 7
» Views: 898
[REQUEST] Sony Vaio VPCEH & VPCEJ series...
Last Post: mariukonie
Today 09:17 AM
» Replies: 241
» Views: 153505
[Request] BIOS mod for Acer EG43M (P01-A...
Last Post: DeathBringer
Today 08:50 AM
» Replies: 7
» Views: 236
HOW TO FLASH MODIFIED OR ORIGINAL BIOS
Last Post: Ali987
Today 03:16 AM
» Replies: 20
» Views: 71867
[REQUEST] Lenovo ThinkPad Yoga S1 (GQETx...
Last Post: Dudu2002
Today 03:05 AM
» Replies: 116
» Views: 56223
Hp 11-ak0040nr add option to boot from i...
Last Post: Xanmx
Yesterday 05:47 PM
» Replies: 0
» Views: 177
Lenovo Y550 BIOS Unlocking (Advanced Men...
Last Post: NiTrOwow
Yesterday 08:28 AM
» Replies: 4
» Views: 969
[GUIDE] How to modify AMI MSI BIOS to un...
Last Post: solver_001
Yesterday 06:34 AM
» Replies: 56
» Views: 334554
[REQUEST] Lenovo ThinkPad T450(s) (JBETx...
Last Post: s_l_24
Yesterday 04:09 AM
» Replies: 148
» Views: 103745
ASUS M11AD > Haswell Refresh
Last Post: DeathBringer
07-04-2025 02:57 PM
» Replies: 21
» Views: 7466
[REQUEST] Acer Nitro 5 AN515-54 BIOS Unl...
Last Post: 2u75
07-04-2025 03:37 AM
» Replies: 131
» Views: 64766
[REQUEST] Acer Nitro 5 AN517-51 BIOS Unl...
Last Post: Dudu2002
07-03-2025 04:08 PM
» Replies: 18
» Views: 12890
[REQUEST] Lenovo IdeaPad Z570 (45CNxxWW)...
Last Post: andkul
07-03-2025 09:52 AM
» Replies: 96
» Views: 114672
Lenovo T430 clean Bios needed
Last Post: halfchemistry
07-03-2025 04:40 AM
» Replies: 1
» Views: 873
[REQUEST] Clevo P150SM Prema Bios Reques...
Last Post: wussification
07-02-2025 10:21 PM
» Replies: 4
» Views: 1429
I need help updating the BIOS on my HP D...
Last Post: benjax_vg122
07-02-2025 01:08 PM
» Replies: 0
» Views: 352
[REQUEST] Lenovo G400S (7BCNxxWW) Whitel...
Last Post: luanstoltzemburg
07-02-2025 10:33 AM
» Replies: 216
» Views: 109920

(UEFI) Dell XPS 15z L511z modded BIOS - and HOWTO
from the UEFI IFR specification - it's a UINT64 variable after the suppress opcode (0A 82 45 8A). So 00 really is 00 00 00 00 00 00 00 00, and because it's little-endian we modify only the first byte to make it a 01. In your case it may be that 0A 82 45 0A is the opcode (yours may have a different sequence) which is why I'm interested to see if you have that byte sequence: 0A 82 45 0A 00
find
quote
(09-30-2012, 01:53 PM)jkbuha Wrote: from the UEFI IFR specification - it's a UINT64 variable after the suppress opcode (0A 82 45 8A). So 00 really is 00 00 00 00 00 00 00 00, and because it's little-endian we modify only the first byte to make it a 01. In your case it may be that 0A 82 45 0A is the opcode (yours may have a different sequence) which is why I'm interested to see if you have that byte sequence: 0A 82 45 0A 00

see here is assembly by Florin9doi if you want to see it Blush

http://www.sendspace.com/file/voutq9
find
quote
@kasar - I have suppress code occurrences in two more modules:
166CD554-8AAE-4617-8FDD-A2E3A5AFD89E_1_1056.ROM: 2
4A538818-5AE0-4EB2-B2EB-488B23657022_0_4.ROM: 15
find
quote
[censored], Trusted Platform Module would be cool to have .. if it's anywhere close to what Latitude D630 used to have.
Computrace .. meh, not so much .. but useful if you have a kid enable it by accident Big Grin

Please report how this goes.
find
quote
@jkbuha

I dont have those files.

those numbers differs from bios to bios I think.

however, the efi file name is written inside one of the 1 kb file with almost the same name the others.

for example SystemVgaDxe.efi

in the other hand, modifing other modules, specially boot modules , shouldnt that be dangerous?

I mean if some critical module fail to load due a fail string replacement it can brick the machine, it wasnt important at the setup module cause it just fail while you enter at the setup module, you can allways flash the bios back to recover it.
however not sure about others.

with the options tweaking, the only way to brick the machine is by changing bios options via menu, however you can allways do a clear cmos by removing the cmos battery to clear the settings.
find
quote
can any one share setup.asm (untouched) of his unlocked bios I want to compare Smile

edit

don't worry about that I extracted it from linked bios on first post
find
quote
A user by the name dexz has confirmed UEFI working for Windows 7 UEFI installations.
The result is that Windows Boot Manager sets itself as a boot option through UEFI Shell's bcfg:
[Image: 1arTQ]

Even though we don't technically have access to our native shell yet we can use the one, say from Intel's EDK.
You have to get the Shell.efi module, rename it to bootx64.efi and place onto a FAT32 formatted USB stick creating a folder /EFI and copying bootx64.efi to this folder.
When you boot from that stick it will load up shell giving you all sorts of access .. like for example adding CLOVERX64.efi as an additional boot option (like Windows Boot Manager on the screenshot above).
find
quote
Can I use Bios1_A11.WPH file from the BiosA11.zip file attached to the first post to flash?

This is for XPS 15Z (L511z).

Thanks
MK
find
quote
Like jkbuha said earlier, there are 2 occurrences of IFR_SUPRESS in SystemSetupSecurityDxe.efi
For Vostro 3450 bios GUID = 166CD554-8AAE-4617-8FDD-A2E3A5AFD89E_1_1079
EFI_IFR_SUPRESS: 0A 82 45 8A (00) 00 00 00 00 00 00 00 45 0A
Address of 1st occurrence: 88F9
Address of 2nd occurrence: 897F
If these are in fact IFR SUPRESS sequences then they must be related to TPM unlocking as there are text string regarding TPM found in the module.

The file that is 7.5Mb in size also has few occurrences but I guess it's really a bad idea to tamper with this as it appears to be the base of the entire fw.

Also I have found an interesting string in SystemBootManagerDxe.efi which says: "F11 - Internal Shell"
find
quote
(10-02-2012, 07:02 AM)TimeWalker Wrote: Like jkbuha said earlier, there are 2 occurrences of IFR_SUPRESS in SystemSetupSecurityDxe.efi
For Vostro 3450 bios GUID = 166CD554-8AAE-4617-8FDD-A2E3A5AFD89E_1_1079
EFI_IFR_SUPRESS: 0A 82 45 8A (00) 00 00 00 00 00 00 00 45 0A
Address of 1st occurrence: 88F9
Address of 2nd occurrence: 897F
If these are in fact IFR SUPRESS sequences then they must be related to TPM unlocking as there are text string regarding TPM found in the module.

The file that is 7.5Mb in size also has few occurrences but I guess it's really a bad idea to tamper with this as it appears to be the base of the entire fw.

Also I have found an interesting string in SystemBootManagerDxe.efi which says: "F11 - Internal Shell"

oh, thanks for the info TimeWalker Smile

anyway, like you said, it seems dangerous to mess with the boot secuence modules.

because I supose a small mistake can kill the entire boot secuence, resulting in a brick.

I think our priority now should be get the bios recovery function working.

I will save us from getting another motherboard if we broke something in bios, also with the recovery working we can also do more agresive tests ^^
find
quote


Forum Jump:


Users browsing this thread: 24 Guest(s)