Honkai Star Rail 4.5 Preload: Download Sizes for PC, PlayStation, and Mobile

The Honkai Star Rail 4.5 preload is live, letting you pull the update files onto your device before version 4.5 releases on August 26, 2026. The patch opens up the Astropolis region along with new story quests and limited-time banners, including Robin Summeretto and Aventurine Waveflair. Downloading the resource package now trims the final install time so you can jump into the new content faster once servers come back up.

Quick answer: Open the preload option on your platform now and confirm the download. PC needs 7.4 GB, Android and iOS need 3.9 GB, and PlayStation downloads automatically once you launch the game.

The preload went live on August 24, 2026, at 2 PM (UTC+8) across PC, PlayStation, and mobile.

Version 4.5 Update and Maintenance Notice

Hello, Trailblazers!
The Version 4.5 pre-installation will begin at 2026/08/24 14:00 (UTC+8). Trailblazers can download some resources in advance, allowing for faster game access after the version update maintenance is complete.… pic.twitter.com/KEadjyCAOP
— Honkai: Star Rail (@honkaistarrail) August 24, 2026

Honkai Star Rail 4.5 preload sizes by platform

The resource package differs depending on where you play. These figures cover the preload download only, not the full expanded install.

Platform	Preload size
PC	7.4 GB
Android and iOS	3.9 GB
PlayStation	Not yet confirmed

The file size grows once the game decompresses and integrates the resources during final installation. If you have extra voice-over language packs installed, the game will ask for additional storage on top of these numbers. Always read the pop-up window before confirming and set aside enough free space to match what it lists.

How to preload HSR 4.5 on PC

Open the HoYoPlay launcher and select Honkai Star Rail from your library if you have more than one HoYoverse game installed.

Find the Pre-Install icon next to the Start button and click it. A pop-up window shows the Resource Package Size and the total storage the update needs.

Check that you have enough free disk space, then click Download to begin pulling the files in the background.

How to preload HSR 4.5 on Android and iOS

Mobile devices do not have a separate launcher, so the preload lives inside the game itself. Stay on Wi-Fi to avoid data charges and keep the app open while it downloads.

Launch Honkai Star Rail and go to the login screen.

Tap the Pre-Download Resource icon in the bottom-right corner. It displays the storage the update requires.

Press Confirm on the pop-up to start downloading the patch files.

How to preload HSR 4.5 on PlayStation

The PlayStation preload is automatic. Boot up Honkai Star Rail on your console, and it begins downloading the resource package after a short wait. Keep enough free storage available, since the process will not start if the console is short on space.

How to know the preload worked

On PC and mobile, the download bar completing and the Pre-Install or Pre-Download option disappearing means the files are ready. On PlayStation, the console reports the download as finished in its notifications. If any resources fail to integrate correctly, the game grabs the missing files automatically when the update goes live, so keep some extra headroom free for that final step.

Preloading does not let you play early. It only stages the data ahead of time, so you still need to wait for the version 4.5 maintenance to finish on August 26 before Astropolis and the new banners become playable.