Forum RSS Feed Follow @ Twitter Follow On Facebook

Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
[-]
Welcome
You have to register before you can post on our site.

Username:


Password:





[-]
Latest Threads
[REQUEST] Lenovo G50-30 (A7CNxxWW) BIOS ...
Last Post: carmelletomato
Today 07:29 PM
» Replies: 46
» Views: 22050
[REQUEST] Lenovo G50-70 (9ACNxxWW) BIOS ...
Last Post: colin89
Today 06:04 PM
» Replies: 140
» Views: 41000
[Request] HP Elitebook 6930P WLAN Whitel...
Last Post: k24a1
Today 05:28 PM
» Replies: 16
» Views: 6583
[REQUEST + BOUNTY] Lenovo Thinkpad P14s ...
Last Post: loadit
Today 02:23 PM
» Replies: 3
» Views: 97
[REQUEST] Lenovo Yoga 2 Pro (76CNxxWW) W...
Last Post: Dudu2002
Today 10:53 AM
» Replies: 845
» Views: 317190
[REQUEST] Lenovo Thinkpad E130 (H4ETxxWW...
Last Post: Dudu2002
Today 10:51 AM
» Replies: 509
» Views: 101093
[REQUEST] Lenovo Yoga 11E (N15ETxxW) Whi...
Last Post: Dudu2002
Today 08:15 AM
» Replies: 5
» Views: 2526
[REQUEST] CPU Support for Ryzen 5 3600 o...
Last Post: flexpavillion
Today 04:32 AM
» Replies: 1
» Views: 339
Clevo P775TM1-G BIOS
Last Post: ActivatedNut
Today 01:36 AM
» Replies: 145
» Views: 55333
ASUS P5G41T-M LX2/GB Unlocked Hidden Ove...
Last Post: GangsteR23
Yesterday 04:58 PM
» Replies: 25
» Views: 64138
lenovo z570 Advanced Menu Unlocked
Last Post: Kaluva12345
Yesterday 04:58 PM
» Replies: 7
» Views: 4103
Lenovo ThinkCentre M715q 2nd Gen & AMD R...
Last Post: RedfieldHUN1987
Yesterday 09:23 AM
» Replies: 2
» Views: 148
L14 Gen 3 AMD , Need UEFI unlock advance...
Last Post: frankeinstein2532555
Yesterday 04:08 AM
» Replies: 0
» Views: 100
[REQUEST] Lenovo Y400 & Y500 (6BCNxxWW) ...
Last Post: freedome
03-26-2024 11:00 PM
» Replies: 188
» Views: 52225
[REQUEST] Lenovo G510 (79CNxxWW) Whiteli...
Last Post: ghostinoss
03-26-2024 09:21 PM
» Replies: 655
» Views: 167283
[Request] CPU support for Lenovo IQ57I
Last Post: DeathBringer
03-26-2024 10:02 AM
» Replies: 5
» Views: 241
unlocked Bios for Machenike s16
Last Post: Dudu2002
03-26-2024 09:06 AM
» Replies: 5
» Views: 332
[REQUEST] Bios Unlock Whitelist HP DV6-6...
Last Post: DimanTLT63
03-26-2024 03:03 AM
» Replies: 0
» Views: 147
[REQUEST] HP Pavilion G6-1252ss Whitelis...
Last Post: joseefitness
03-26-2024 01:40 AM
» Replies: 0
» Views: 131
[REQUEST] Lenovo S310 & S410 (8BCNxxWW) ...
Last Post: morgley
03-25-2024 10:43 PM
» Replies: 14
» Views: 6334

[Request]. Advanced menu in X220 without 5-5 Beep Problem (RSA checksums and so on).
#1
I am sorry for cross-post.

Hi there,


What I need:

1. Unblocked advanced menu in X220 BIOS;
1. Unlocked memory speed 1866 on the systems with active TPM (get rid of "5-5 beeps and delay" problem on start-up without deactivating of TPM itself);

2. SLIC 2.1;
3. No White-list.

I understand it is an uneasy task and to make it possible you need to have some inside info about how TPM operates in Lenovo's X220 and how RSA checksum calculation goes.


Quote:XFD
There is RSA signature and SHA-1 checksums block at: 0x740048, RSA public key is located at 0x740A48. Make a HEX diff of modded and original BIOS. If RSA signature or any SHA-1 checksum is invalid and Security chip is enabled you will hear 2x5 beeps bursts on power on.

Here how it looks like:

[Image: post.cgi?id=attach:17:49535:4021:3.jpg]
[Image: post.cgi?id=attach:17:49535:4021:2.jpg]



I have SPI programmer and full dump of the BIOS, so I think it is safe to do different experiments.

Thanks in advance.
find
quote
#2
Anyone, please?
find
quote
#3
Hi,

It will be pretty much impossible to bypass RSA encryption, the only way would be to disable the TPM chip. You only need that chip if you pay monthly for an anti-theft protection, which has its downsides - ie system detects an abnormality which thinks the laptop is stolen, ive seen people having to replace motherboards because of TPM.

But I'd be happy to unlock advanced tab, remove WL and add SLIC 2.1
find
quote
#4
(07-03-2015, 06:26 PM)LosSantosPro Wrote: Hi,

It will be pretty much impossible to bypass RSA encryption, the only way would be to disable the TPM chip. You only need that chip if you pay monthly for an anti-theft protection, which has its downsides - ie system detects an abnormality which thinks the laptop is stolen, ive seen people having to replace motherboards because of TPM.

But I'd be happy to unlock advanced tab, remove WL and add SLIC 2.1

I will be happy if you will unlock advenced tab and remove wl :>
find
quote
#5
(07-03-2015, 06:26 PM)LosSantosPro Wrote: Hi,

It will be pretty much impossible to bypass RSA encryption, the only way would be to disable the TPM chip. You only need that chip if you pay monthly for an anti-theft protection, which has its downsides - ie system detects an abnormality which thinks the laptop is stolen, ive seen people having to replace motherboards because of TPM.

But I'd be happy to unlock advanced tab, remove WL and add SLIC 2.1

Hi LosSantosPro,

Following on this thread, my HP ProBook 450 G2 laptop is in a similar situation regarding the TPM chip. The laptop can not go beyond the black bios screen as shown in the thread  I have posted in the General Forum:

https://www.bios-mods.com/forum/Thread-H...ocked-BIOS

Would you please offer advice on the way forward either in a PM or in the above thread.

I tried the basic method of removing the CMOS battery, never worked. Tried a usb bootable bios flash drive, the laptop fan just runs at high revs but nothing happens on screen.

Thanks in advance.

JumboJet
find
quote


Forum Jump:


Users browsing this thread: 1 Guest(s)