Jump to content

Boeing b737-900 Ultimate Upgrade 2021 1.0.0

   (2 reviews)

4 Screenshots

About This File


With the kind endorsement of @Captain Kitten, I would like to share with the community a number of fixes to the beloved Boeing b737-900 Ultimate. Please find below a list of the fixes:

  • Working rudder ✅
  • Repositioning of the logo lights ✅
  • Alignment of the default ground services with the aft service and cargo doors ✅
  • Improved spoilers and airbrakes deflections based on the real plane ✅
  • Remodeled spoilers and airbrakes geometry in the Flight Model ✅

These modifications are brought with love and passion to the community, and I am grateful with the Threshold team for allowing me to share this. All the credit for the development of the wonderful b737-900U belongs to the creators. Please keep in mind that this modification is not intended to replace the Level Up project that is in the making, nor it could ever compete with it. This is just an addition aimed to improve our experience in the meantime the real deal is released.



Just unzip, and place the folder 737-900U_1910 in the directory where you have the plane installed. The latest version can be downloaded here: 



Remember to install the upgrade for the Zibo system before installing this fix (737-900U_1910). The same can be found with the link above. Back up files have been provided, so feel free to overwrite the three files that come with this download.


Thank you for downloading this file. Your feedback is welcome. Please let me know if you have any issues and I will take a look as soon as I can.

Best regards, and safe flights!

Edited by Jason Ariel

What's New in Version 1.0.0   See changelog


No changelog available for this version.

  • Thanks 2

User Feedback

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.


Winston Cheang

· Edited by Winston Cheang

   1 of 1 member found this review helpful 1 / 1 member

not sure if it was just me. The duct press doesn't work after the installation of the fix so I can't really start the engine. The duct press works perfectly fine when the installation of the fix was removed.

Response from the author:

Hello. Thank you for reporting. Make sure you have the latest zibo system provided with the original 739U download. 

Link to review

   1 of 1 member found this review helpful 1 / 1 member

Hi there!


I 've downloaded the V1909 and you fix, did not work... Then if you go down the page on the v1909, it has the v1910...tried as well and then you fix, and now is working, so you should update instructions:


v1909: 737-900U - Airliners - Threshold (thresholdx.net)


v1910 https://drive.google.com/open?id=1VCPhDHiEGClRsTcDQN-9uLp-sioTEFXQ

Then you fix!





Response from the author:

Thanks. I tried to explain that, I will make the changes to the file description to make it more clear.

Link to review

  • Create New...

Important Information

Please read the Terms of Use