Xbox A350 updates

[AirplaneEnjoyer]

Hi,

I have the A350 on Xbox series X, and we are currently on v1.2.2. Given that fact the A350 is virtually un-flyable on long hauls with the step climb/UTC bug, I was curious of when updates reach Xbox? With 1.2.4 recently being released, what does the time line usually look like for these updates to come to Xbox?

I understand it takes some time for the updates to go through Microsoft, but I was just curious what that usually looks like. 

Thanks 

[MITCH1988]

Try manually adding the step climbs. Go into the OIS and find the setting that automatically adds the step climbs into the FMC from simbrief and turn it off.

I have found that manually adding the step climbs yourself fixes the issues.

[AirplaneEnjoyer]

5 hours ago, MITCH1988 said:

Try manually adding the step climbs. Go into the OIS and find the setting that automatically adds the step climbs into the FMC from simbrief and turn it off.

I have found that manually adding the step climbs yourself fixes the issues.

Has this worked for you on Xbox? I’ve only ever manually entered them and have never had the automatic step climb entry turned on, and i’ve yet to have a flight where it isn’t broken at some point. 

I’ve had cases where 2 step climbs I enter will display and work okay (FL360 and FL400), but the third one (FL380, second step climb that I enter) will cause the erroneous UTC times, not display, and cause errors in trip time and fuel burn. 

Thank you for reaching out, I really appreciate any help or suggestions I can get. I love the A350 and want to figure out a work around, but it’s just not working for me. 

[MITCH1988]

Ever since I changed the setting I havent had a WASM crash. Everything has worked perfectly for me. I actually did a 17 hour flight from klax to Singapore. 

[AirplaneEnjoyer]

4 hours ago, MITCH1988 said:

Ever since I changed the setting I havent had a WASM crash. Everything has worked perfectly for me. I actually did a 17 hour flight from klax to Singapore. 

I never had a WASM crash with this bug, there was just an issue with the UTC times displayed on the flight plan page of the FMS. The UTC times would show as negative values only when step climbs were input in the flight plan. As a result, the plane wont auto step climb, and the EFOB calculation is messed up, among other things. Seems to be like an Xbox only problem.

I recently discovered when doing YSSY-KLAX, the UTC times were normal and all the step climbs were fine throughout the whole flight. Every other route i’ve tried does not work. Not sure why this specific route works, but having the plane work as intended on a whole flight was great. 

Last i checked, Xbox is still on 1.2.2. If anyone knows how long it usually takes, or why it’s taking so long, for these updates to come to Xbox, that’d be awesome!

[Green97]

I’ve turned off the auto import  step climb and the plane works fine for me on Xbox with no orange screens.

[AirplaneEnjoyer]

On 3/7/2026 at 7:26 PM, BoeingSpeedbird said:

Long haul from Kuala Lumpur - 2 hours in and this is the UTC data. What’s going on? If I re-insert the landing airport (EGCC) and STAR then, for a short while, the UTC info corrects, but it goes rogue again quickly after. Why? On Xbox. 

Do step climbs/auto step climbs work for you? Whenever I input them, I get weird UTC times as shown in the screenshot above from another post. No orange screens or anything. 

 

6 hours ago, Green97 said:

I’ve turned off the auto import  step climb and the plane works fine for me on Xbox with no orange screens.