Jhonnyjhonson Posted November 26, 2021 Share Posted November 26, 2021 Hello , I need bios unlock for my T450S, Can you please help. Thanks Quote Link to comment Share on other sites More sharing options...
Bios Modder Klem Posted November 27, 2021 Author Bios Modder Share Posted November 27, 2021 On 11/27/2021 at 12:59 AM, Jhonnyjhonson said: Hello , I need bios unlock for my T450S, Can you please help. Thanks Hi! Check PM. Quote Link to comment Share on other sites More sharing options...
crowleypsean Posted December 13, 2021 Share Posted December 13, 2021 Hello, does this kit have everything I need to do this?https://www.amazon.com/gp/product/B07R5LPTYM/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1 Also, do I need to send you my specific t450s bios that I'm running or can I use one of the already cracked bios files? I just want to removing the whitelist. Thanks! Quote Link to comment Share on other sites More sharing options...
Bios Modder Klem Posted December 13, 2021 Author Bios Modder Share Posted December 13, 2021 1 hour ago, crowleypsean said: Hello, does this kit have everything I need to do this?https://www.amazon.com/gp/product/B07R5LPTYM/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1 Hi! Yes. Check PM. Quote Link to comment Share on other sites More sharing options...
Toni Posted December 27, 2021 Share Posted December 27, 2021 Hi, I have a T450 and cannot update my bios as I always get an error "Secure Flash Authentication Failed". Tried every advice fond online but no luck. Question is can this procedure be used to flash latest stock bios from lenovo? Thanks! Quote Link to comment Share on other sites More sharing options...
Bios Modder Klem Posted December 27, 2021 Author Bios Modder Share Posted December 27, 2021 1 hour ago, Toni said: Hi, I have a T450 and cannot update my bios as I always get an error "Secure Flash Authentication Failed". Tried every advice fond online but no luck. Question is can this procedure be used to flash latest stock bios from lenovo? Thanks! Hi! Solution is Secure RollBack prevention should be set to disabled: 1. Go to the BIOS Setup menu (Read at Methods to enter BIOS) 2. Click on Security 3. Click on UEFI BIOS Update Option 4. Click on Secure Rollback Prevention 5. Click on Disable https://support.lenovo.com/bo/en/solutions/ht117858-bios-rollback-flash-failure-secure-flash-authentication-failed-when-secure-rollback-prevention-enabled-thinkpad-t450-t450s Also, do you have Admin privileges on your device, cause if not, then that can definitely prevent you from preforming firmware update. If you have turned off UAC (User Account Control) then make sure to right click the .exe files and select "Run as Administrator" Quote Link to comment Share on other sites More sharing options...
Toni Posted December 27, 2021 Share Posted December 27, 2021 5 minutes ago, Klem said: Hi! Solution is Secure RollBack prevention should be set to disabled: 1. Go to the BIOS Setup menu (Read at Methods to enter BIOS) 2. Click on Security 3. Click on UEFI BIOS Update Option 4. Click on Secure Rollback Prevention 5. Click on Disable https://support.lenovo.com/bo/en/solutions/ht117858-bios-rollback-flash-failure-secure-flash-authentication-failed-when-secure-rollback-prevention-enabled-thinkpad-t450-t450s Thanks Klem, but unfortunately it doesn't work. I tried flashing from windows, making eltorito boot disk, disabling virtualization... Always the same. EC gets flashed, but bios not and always with the same message. Quote Link to comment Share on other sites More sharing options...
Bios Modder Klem Posted December 27, 2021 Author Bios Modder Share Posted December 27, 2021 2 minutes ago, Toni said: Thanks Klem, but unfortunately it doesn't work. I tried flashing from windows, making eltorito boot disk, disabling virtualization... Always the same. EC gets flashed, but bios not and always with the same message. Also, do you have Admin privileges on your device, cause if not, then that can definitely prevent you from preforming firmware update. If you have turned off UAC (User Account Control) then make sure to right click the .exe files and select "Run as Administrator". Quote Link to comment Share on other sites More sharing options...
Bios Modder Klem Posted December 27, 2021 Author Bios Modder Share Posted December 27, 2021 Also, check if in your bios setup menu settings set to what they are in the picture below as well? Quote Link to comment Share on other sites More sharing options...
Toni Posted December 27, 2021 Share Posted December 27, 2021 3 minutes ago, Klem said: Also, do you have Admin privileges on your device, cause if not, then that can definitely prevent you from preforming firmware update. If you have turned off UAC (User Account Control) then make sure to right click the .exe files and select "Run as Administrator". Always ran as admin. I think utility cannot even be started other way. 1 minute ago, Klem said: Also, check if in your bios setup menu settings set to what they are in the picture below as well? I don't have the laptop with me at the moment, but I think I don't have the third option at all. First two ones are set as in the picture. Quote Link to comment Share on other sites More sharing options...
WhiteFossa Posted January 1, 2022 Share Posted January 1, 2022 Could someone to de-whitelist my ThinkPad T450s BIOS (I'm struggling with installation of Huawei 4G modem). BIOS already dumped and I'm ready to send it to someone into PMs. Quote Link to comment Share on other sites More sharing options...
WhiteFossa Posted January 1, 2022 Share Posted January 1, 2022 I've tried to follow this instruction (links at the end of post), but assembly code is very different from that example, so I was unable to fix it (I know AVR assembler, but not the x86).https://medium.com/@p0358/removing-wlan-wwan-bios-whitelist-on-a-lenovo-laptop-to-use-a-custom-wi-fi-card-f6033a5a5e5a Quote Link to comment Share on other sites More sharing options...
Toni Posted January 1, 2022 Share Posted January 1, 2022 Confirmed. I dont have "windows UEFI firmware update" option in BIOS. On 12/27/2021 at 9:56 AM, Klem said: Also, check if in your bios setup menu settings set to what they are in the picture below as well? Quote Link to comment Share on other sites More sharing options...
Bios Modder Klem Posted January 1, 2022 Author Bios Modder Share Posted January 1, 2022 8 hours ago, WhiteFossa said: Could someone to de-whitelist my ThinkPad T450s BIOS (I'm struggling with installation of Huawei 4G modem). BIOS already dumped and I'm ready to send it to someone into PMs. Hi! Ok. You can send me your bios dump via PM. Note, the file bios dump must be read using hardware SPI-programmer. Quote Link to comment Share on other sites More sharing options...
Bios Modder Klem Posted January 2, 2022 Author Bios Modder Share Posted January 2, 2022 16 hours ago, WhiteFossa said: Could someone to de-whitelist my ThinkPad T450s BIOS (I'm struggling with installation of Huawei 4G modem). BIOS already dumped and I'm ready to send it to someone into PMs. Ok. Your unlocked bios done. Check PM. 1 Quote Link to comment Share on other sites More sharing options...
WhiteFossa Posted January 2, 2022 Share Posted January 2, 2022 59 minutes ago, Klem said: Ok. Your unlocked bios done. Check PM. Thanks you a lot, everything is working fine now. Quote Link to comment Share on other sites More sharing options...
Bios Modder Klem Posted January 2, 2022 Author Bios Modder Share Posted January 2, 2022 2 minutes ago, WhiteFossa said: Thanks you a lot, everything is working fine now. Ok. Thanks for your feedback. Quote Link to comment Share on other sites More sharing options...
JKOMOL Posted January 3, 2022 Share Posted January 3, 2022 Good afternoon, I wonder if you can modify my BIOS so that it does not send "End-Of-POST" message to ME? Also, my PC have Boot Guard, is it possible to disable it or bypass somehow? Quote Link to comment Share on other sites More sharing options...
Bios Modder Klem Posted January 3, 2022 Author Bios Modder Share Posted January 3, 2022 1 hour ago, JKOMOL said: Good afternoon, I wonder if you can modify my BIOS so that it does not send "End-Of-POST" message to ME? Also, my PC have Boot Guard, is it possible to disable it or bypass somehow? Hi! What the laptop model? Quote Link to comment Share on other sites More sharing options...
JKOMOL Posted January 4, 2022 Share Posted January 4, 2022 (edited) ThinkPad T450 (model 20BUS08800). Edited January 4, 2022 by JKOMOL Quote Link to comment Share on other sites More sharing options...
Bios Modder Klem Posted January 4, 2022 Author Bios Modder Share Posted January 4, 2022 53 minutes ago, JKOMOL said: ThinkPad T450 (model 20BUS08800). No, I've never heard about "End-Of-POST" message. I don't think that unlocked advanced menu and unlocked whitelist can help you with your problem. Quote Link to comment Share on other sites More sharing options...
Toni Posted January 16, 2022 Share Posted January 16, 2022 On 12/27/2021 at 8:25 AM, Toni said: Hi, I have a T450 and cannot update my bios as I always get an error "Secure Flash Authentication Failed". Tried every advice fond online but no luck. Question is can this procedure be used to flash latest stock bios from lenovo? Thanks! Could unlocking advanced menu maybe solve this? Quote Link to comment Share on other sites More sharing options...
Bios Modder Klem Posted January 16, 2022 Author Bios Modder Share Posted January 16, 2022 1 hour ago, Toni said: Could unlocking advanced menu maybe solve this? I don't think that unlocked advanced menu and unlocked whitelist can help you with your problem. Quote Link to comment Share on other sites More sharing options...
red_928 Posted April 16, 2022 Share Posted April 16, 2022 (edited) Hi, I have previously tried to unlock my BIO on my T450s, but was only partially successful. I was able to remove the display whitelist, but I'm still unable to remove the network card restrictions Would you be able to help? Thanks Edited April 16, 2022 by red_928 Quote Link to comment Share on other sites More sharing options...
Bios Modder Klem Posted April 16, 2022 Author Bios Modder Share Posted April 16, 2022 5 hours ago, red_928 said: Hi, I have previously tried to unlock my BIO on my T450s, but was only partially successful. I was able to remove the display whitelist, but I'm still unable to remove the network card restrictions Would you be able to help? Thanks Hi! Yes, you can post here or send me your bios dump, or upload your file bios dump into any fileserver and post the link. In Lenovo ThinkPad T450s, any modified bios can be flash using hardware SPI programmer only, exactly the same as described in the first post of this thread. So, for creating backup (dump) of bios you need to use hardware SPI programmer only. Quote Link to comment Share on other sites More sharing options...
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