ASIAIR App 2.5.2 Android Stable Version Available – Download & Rollback Guide

PMTeam@ZWO

Dear Valued Users,

The ASIAIR App Android 2.5.2 stable version is now available for download on the ZWO official website.

Due to the limitations of the iOS system, rollback to previous versions is currently supported only on Android devices. If you need to roll back the ASIAIR App to version 2.5.2, please follow the steps below.

Rollback Steps

In the latest version of the ASIAIR App, restore the firmware to factory settings.
Uninstall the current version of the ASIAIR App.
Visit the ZWO official website to download and install ASIAIR App version 2.5.2.

Note: Rolling back to an earlier version will delete cached data stored in the app. To minimize potential data loss, we recommend staying logged in before uninstalling the app. After installing ASIAIR App 2.5.2, please log in to your account again as soon as possible.
App Download Link: https://www.zwoastro.com/software/asiair/

Need Help? Contact Us
If you encounter any software or hardware issues while using ASIAIR, we recommend contacting our official technical support team first. Our support team will provide targeted assistance based on the specific issue you are experiencing.

Technical Support: https://support.zwoastro.com/cn

At the same time, our product team will continue to monitor user feedback on this forum. Your feedback and suggestions are valuable input for future updates and improvements to the ASIAIR App.

To help us identify and resolve issues more quickly and accurately, please provide as much of the following information as possible when reporting a problem:

The model of the device you are using;
The specific scenario in which the issue occurs and the steps to reproduce it;
A detailed description of the problem;
After submitting a Bug Report through the ASIAIR App, please provide the corresponding Bug ID.

Providing complete and accurate information will help us analyze the issue more efficiently and identify the root cause of the problem.

Thank you for your valuable feedback and suggestions, and thank you for your continued support of ZWO!

AstroDude42

PMTeam@ZWO Due to the limitations of the iOS system

I would suggest releasing another app branch for the iOS v2 app. I'd name it ASIAir2 and release it in addition to the main branch which is already at v3. This would make a lot of iOS users very happy.

Corsair

Just an odd little bug with 2.5.2:

When connecting to the ASIAIR after powering it on, connecting to it with my Android device, launching the App, selecting enter device and going through the initial setup i I see an error message about the EFW being disconnected even though I don't have an EFW.

Never see it again going in and out of the App (asiair remains on) and it doesn't impact anything for me use case but just something that happens.

My setup when this happens:

Sal-33 mount on and connected to usb 2.0 port of asiair but powered separately.
ASI294MC Pro camera connected to usb 3.0 port and connected to power output of asiair but not yet powered on.
Rest of equipment: C8 SCT with f/6.3 Reducer; MLAstro P-200 Pier Extension; HEQ5 Pro Tripod
I do NOT have an EFW, EAF, CAA, Guide Camera, Guide Scope

Corsair

Corsair Just an odd little bug with 2.5.2:

When connecting to the ASIAIR after powering it on, connecting to it with my Android device, launching the App, selecting enter device and going through the initial setup i I see an error message about the EFW being disconnected even though I don't have an EFW.

Never see it again going in and out of the App (asiair remains on) and it doesn't impact anything for me use case but just something that happens.

My setup when this happens:
Sal-33 mount on and connected to usb 2.0 port of asiair but powered separately.
ASI294MC Pro camera connected to usb 3.0 port and connected to power output of asiair but not yet powered on.
Rest of equipment: C8 SCT with f/6.3 Reducer; MLAstro P-200 Pier Extension; HEQ5 Pro Tripod
I do NOT have an EFW, EAF, CAA, Guide Camera, Guide Scope

Just realised I hadn't included my ASIAIR version in my post @PMTeam@ZWO :
I'm using an ASIAIR Plus 32GB Model (the Raspberry Pi model) running 2.5.2 I installed a week or two ago.

Luxo

According to this 2.5.2 was released 6 months ago, in March - including Android & iOS versions.

What changed ? Or should this really be version 2.5.3 ?

Corsair

Luxo According to this 2.5.2 was released 6 months ago, in March - including Android & iOS versions.

What changed ? Or should this really be version 2.5.3 ?

Pretty sure it is the same version as the one released back in March. They're just providing official access to the 2.5.2 APK file (as opposed to the links to the APK files I've posted previously in other threads) for those on Android who either want to downgrade from 3.0 back to 2.5.2 or upgrade to 2.5.2 but not 3.0.

PMTeam@ZWO

Luxo Hi, this is the download link for the version released in March 2026. We have put the 2.5.2 build on our official website at the request of users, to provide an official rollback option for those who need it.

PMTeam@ZWO

Corsair Hi Corsair, Thank you for your detailed feedback. We recommend submitting a bug report within the app and sharing the BT ID with us. We will analyze the logs in detail.

Corsair

PMTeam@ZWO
The BT ID is: BT20260925095422A

Steps to reproduce using an ASIAIR Plus 32GB (RPi model) running 2.5..2 and an ASI294 MC Pro camera:

Connect ASI294MC Pro camera to USB 3.0 on ASIAIR Plus
Connect power from power output 1 on ASIAIR Plus to ASI294MC Pro camera.
Turn on ASIAIR Plus and wait for it to boot up

Now on device (from me Android phone - Galaxy S25 - running ASIAIR App 2.5.2):

Launch ASIAIR App
After it has launched - switch device over to ASIAIR WiFi.
Tap Enter Device in ASIAIR App
Tap Enter on the initial setup window
App now goes shows Preview Mode and pops up error message about the EFW (again - there is no EFW connected).

Screen recording of it happening:

screen-recording-20260925-112025-asiair.mp4

1MB

Screenshot of error message:

PMTeam@ZWO

AstroDude42 Thank you for your feedback. We have taken your suggestions on board and submitted iOS version 2.5.2 to TestFlight. Once it passes review, I will update this post to share the download link with everyone.

AstroDude42

PMTeam@ZWO Great move, thank you! Much appreciated. I hope you submitted it to the AppStore, not TestFlight. Not everyone uses TestFlight as this is more developer-centric, not user-centric.

Corsair

AstroDude42
Unfortunately, due to the way Apple does things, pushing 2.5.2 via TestFlight is the only way to do it for people on Apple devices.

AstroDude42

Corsair what about ZWO releasing a 2nd ASIAir app in the AppStore? That's what i meant. This way it would be much easier to revert to the v2 branch. You could literally install both version (v2 and v3) on the same device.

Luxo

Current version of iMazing works, I can install any version of ASIAir. 2.1.2 2.3.3 and 2.5.0 were the better version but that’s not saying much, all are prone to random wifi disconnections.