v29.1 Beta BIOS (Addresses TDP)

Hi All,

This is a Beta BIOS (for now) with essentially one minor change over currently official v29: the issue with Space interaction with the TDP setting has been fixed. 

Keep in mind this is still not a "full" implementation of custom TDP, which will come later, but provides a fix to the implementation of the TDP customization that is intended to be implemented currently. 

Again, there are 3 core "controls" needed for full custom TDP implementation: sPPT, fPPT, and TDP.  sPPT and fPPT will be implemented later, TDP is already implemented, and this updated BIOS allows it to once again work as it should, and that is, to provide a baseline guidance to the system for user-desired TDP setting.  The system will operate around that TDP Level but not precisely 100% of the time.

Before you dive into the download, please read the following important information:

Beta BIOS Advisory:

  1. Beta Status: This BIOS is in beta, meaning it's still undergoing rigorous testing. It's not a final product and may have bugs or issues that could impact your device's performance.

  2. Voluntary Use: Your decision to participate in this beta is entirely voluntary. Downloading and installing this BIOS is at your discretion, understanding the inherent risks of using a product in beta.

  3. Warranty Assurance: While we offer this beta BIOS "as-is" and cannot guarantee its functionality or a bug-free experience, please be assured that using it will not void your device's warranty under Lenovo's terms. However, we cannot extend any warranties, expressed or implied, specific to this beta BIOS.

  4. Feedback & Support: We value your input! Share your experiences in the designated forum. While we may not be able to respond to each comment individually, our team will monitor the feedback for insights and improvements. Note: Official support for this BIOS is not available, but our service team is ready to assist with general queries.

  5. Potential Updates: This beta BIOS is a work in progress. We may issue updates, fixes, or even release a final version in the future. Installing this BIOS does not automatically enroll you in future updates.

  6. Opting Out: If you encounter issues or prefer not to use this beta BIOS, you can easily revert to the stable, official version available on our website. Instructions for reverting are provided below*

We thank you for your participation and understanding as we work towards enhancing your experience with Legion Go.

By downloading and installing this BIOS, you acknowledge that you have read, understood, and agree to these terms.

Download Link: /N3CN29WW_5F00_update.zip

Installation instructions: Download the file, unzip with your utility of choice (right click, extract to use the built-in windows extractor), double click the .exe file, and follow on screen instructions.

v29.1 Notes:

Summary of changes
1.Based on BIOS29
2.Fixes WMI call for TDP setting in BIOS


  • After installing the BIOS the screen may be in Portrait mode if you have rotation lock enabled.  If that's the case, disable rotation lock, let it rotate back to landscape, and then re-enable it. 
  • The screen may stay off for a long period of time while the BIOS is updating, please do not power off mid-update.  Power LED will be on while the screen is off and update is still in progress. 
  • Once completed, BIOS should read as N3CN29WW_TDP02, you may need to re-enter the BIOS to re-confirm and re-adjust settings like UMA buffer size/etc. 
  • Please also note for best results controlling TDP to use STAPM ("STAMP") mode as opposed to STT.
  • This file may trigger some false positives on some antivirus software due to the fact that it alters firmware and is new/unsigned.  Again, you are under no obligation to use this BIOS to update your system, it is entirely optional and opt-in.  If you don't feel comfortable doing it, then it is not recommended.

*To revert to an earlier BIOS:

  • Enter the BIOS configuration by holding down the Volume Up(+) Button during boot.
  • Select "BIOS Setup" from the Novo Button Menu
  • Select "More Settings" button on the bottom right of the BIOS main screen
  • Select "Configuration" tab from the left Menu
  • Scroll down (finger touch) to "BIOS Back Flash" and ensure that is enabled.
  • Press "Exit" on the left Menu
  • Press "Exit Saving Changes" from the options on the right
  • Press "Yes"
  • Allow system to reboot
  • Download and install the latest officially released version on our support site here: laptops and netbooks :: legion series :: legion go 8apu1contentdetail - Lenovo Support US

Thank you!

  • I noticed the 29.1 BIOS might reset some settings you previously had on v29.  Random thought would be to compare the two.  I dont know how you're connecting to your PS remote play app but as far as I know there's really nothing in the BIOS that would impact audio over an app between 29 and 29.1, either way sorry it didn't work out for you.

  • So I decided to try out this update since my Go was just eating battery no matter what setting I was on. It seems to be working much better at limiting the TDP usage. I am seeing way better battery life with the Custom TDP working. I can get 3-4+ hours now on light games. It still seems a little wonky at the moment but a great move in the right direction.

  • Just an update after some more use. In games and normal use cases where I can lower the device TDP to 5w, I am getting an estimated time of over 5 hours of battery life. I am enjoying the Go even more having less time tied to a charger. This was one of the things I missed with my SteamDeck that I don't anymore. Awesome!

  • Just awesome! Also loved it to play Dead Cells already before the Bios Beta update, even if it was still drawing 14 Watts, it already held through the double amount of time WinkThumbsup

    How much is the actual current battery draw, if you set it to 5 TDP? Did you check it with MSI afterburner maybe? (Still didn't find time to test it out, even if I wanted so often! Sweat smileSob)

    Are there any games you can recommend for playing at 5 Watts? WinkSmiley

  • Mostly emulation and normal usage for the 5-watt. It seems to draw around a total of 9-10 Watts. I haven't tested too many others out yet. I think Jade Empire was running well at 5(maybe it was 6 or 7) and I assume games like Knights of the Old Republic 1 & 2 would also.


    Thanks a lot for the reply! WinkOk handThumbsup 

    It will be awesome to see as soon as they will have implemented the two remaining steps to let custom TDP actually really work at 5 watts hopefully, then the battery life will get REALLY awesome with Winkthose games running with it WinkThumbsup.

    -> Still it is already a great improvement compared to before the beta, were when playing dead Cells on 5 Watt mode it was still actually drawing 14 watts... Sweat smile

    Thanks for for letting me know which games you tried out already with that wattage. Will try out a few others too.

  • Hi together,

    I finally made it to test the Beta Bios too, and I'm quite impressed with the improvements! Even better then I thought, and as it was reported so far! ThumbsupSmileyThumbsup I think it can highly depend on the game you are playing though.

    Today I tested Dead Cells directly before the Bios Update and directly after;


    -> Before with BIOS version 29:

    5 Watts custom TDP setting = automatically drawing 14 watts constantly!


    -> After with BIOS 29.1 Beta:

    5 Watts settings worked quite good, but mostly was drawing only 4 Watts going up to 6 Watts in certain situations; Depending on the surrounding it went up to 6 watts, but mostly stayed at 4 to 5 Watts for real, which can be a bit too less for Dead Cells (went below 30 fps in some situations).

    Changed the custom TDP up to 7 Watts and it was perfectly playable for many hours at 1600p with always between 60 and 100 fps! The power draw went up just a moment at the beginning to 9 watts, but really quickly went down and stood Smileyquite stable at 6 watts SmileySmileySmiley.

    Had a great run, so got addicted to it, once again, and played 2-3 hours non stop, still having over 50% of battery now and started only with 93% battery, not even being completely full! SmileySmileyOk handThumbsup 


    For anyone who likes, or is neutral to Rouge likes (it is a rougue lite, in which there are many things you can unlock, upgrade and keep constantly) and likes Metroidvanias, I can totaly recommend Dead Cells, as for me it belongs to the best of it's Genre. (Admittedtly with many other good ones Yum) It is a game I can never play for days in a row, but which I enjoy again each time I play it again after a few days/weeks ThumbsupRelaxedThumbsup

  • I also wanna add, I just installed the newest chipset drivers today before the BIOS Update, and I'm quite shore I got an additional boost in fps through it in Dead Cells too WinkThumbsup

    (For comparison reasons; Also have the newest Windows update installed, and am using the newest AMD drivers.)

  • I also wanna add, I just installed the newest chipset drivers today (before I didn't have any installed at all temporarily) before the BIOS Update, and I'm quite shore I got an additional boost in fps through it in Dead Cells too WinkThumbsup

    (For comparison reasons; Also have the newest Windows update installed, and am using the newest AMD drivers.)

  • Hey Ben, how long is a "long period of time"? I am currently trying to update to the beta bios. Screen has been black for over 30 minutes at this point and I'm starting to get worried. Fan is on and power LED is on.