Wuthering Waves 3.7 Pre-Download Guide: File Size, Maintenance Time, and 300 Astrite

Version 3.7 arrives after a seven-hour maintenance window

Wuthering Waves Version 3.7, Prism's Illusion, Heart's Illumination, is scheduled to launch on September 30, 2026. Kuro Games lists maintenance from 04:00 to 11:00 on September 30 in UTC+8, a planned seven-hour window during which players cannot log in. The newly published maintenance notice also confirms the pre-download start, storage requirements, compensation, and a limited test for tiered client downloads. The full notice is reproduced with its original-source link in the Version 3.7 maintenance announcement.

For players in the United States, that window falls on September 29: 13:00 to 20:00 Pacific Daylight Time and 16:00 to 23:00 Eastern Daylight Time. In the United Kingdom, it runs from 21:00 on September 29 to 04:00 on September 30 British Summer Time. Server reopening can move if maintenance is extended, so the in-game notice remains the final check before planning an evening session.

The Version 3.7 pre-download opens on September 28 at 10:00 UTC+8. That converts to September 27 at 19:00 Pacific Daylight Time, September 27 at 22:00 Eastern Daylight Time, and September 28 at 03:00 British Summer Time. Starting early matters because this is one of the larger Wuthering Waves update packages.

PC and mobile need more free space than the package size

The official notice separates the actual download from the temporary free space needed to install it. On PC, the pre-download package is about 26GB, but the launcher asks for roughly 46GB of available space. On Android and iOS, the package is about 13GB, while installation needs around 20GB free. The extra space is used while resources are unpacked, checked, and merged; it should be released after the update finishes.

That distinction explains why a device can show enough room for the package but still refuse to install it. Do not clear exactly 26GB on PC or exactly 13GB on mobile. Leave the full requested reserve, plus several additional gigabytes for system caches, screenshots, and any post-launch hotfix. Moving only a few photos after an installation error usually takes longer than preparing the storage in advance.

The broader device requirements remain higher: the notice recommends 100GB of available storage on PC, preferably on an SSD; 60GB on Android or iOS; and 150GB on Mac for the full client and future resource handling. Console players on PlayStation 5 and Xbox should use the platform storage screen because the notice does not give one universal console figure.

Prepare PC Mac PlayStation and Xbox before September 30

PC players should close Wuthering Waves, restart the official launcher, and select New Version Pre-Download when it appears below the Start button. Keep the launcher open until verification completes. Installing on an SSD reduces the slowest part of resource merging, while an almost-full system drive can still cause failure even if the game itself sits on another drive. Check both the installation drive and the drive used for temporary system files.

After maintenance begins, PC users update by restarting the launcher and choosing Update. Mac users download the new version through the App Store. PlayStation 5 users can highlight Wuthering Waves on the home screen, press the Options button, and choose Check for Update. Xbox Series X and Series S users should open My games and apps, then Manage Updates. Xbox PC users update from My Library and the Files tab in the Xbox app.

Automatic console downloads are useful, but they are not proof that the whole update is ready. Before the server reopens, confirm that the download has completed and that no second installation or verification stage is waiting. Players with slow connections should avoid launching another large download at the same time.

Mobile players should protect storage battery and login access

On Android and iOS, the pre-download button appears on the title screen after login or on the in-game Terminal page. The process can continue while playing and can be paused, but a stable Wi-Fi connection is safer than relying on mobile data. Keep the device charged or connected to power, especially if the operating system pauses background work when the screen turns off.

The 20GB reserve is not the final client size. Kuro Games lists 60GB as the mobile storage requirement, so a phone that is already close to that limit may struggle again when version resources are merged. Remove old screen recordings, duplicate downloads, and unused language packs first. Do not delete the game unless you know the full reinstall size and have enough time to download it again.

Android players will follow the in-game update prompt once maintenance starts. iPhone and iPad users update through the App Store. If the store still shows Open instead of Update, refresh the app page, check available storage, and wait for regional distribution rather than repeatedly reinstalling the client.

Tiered client downloads change the process for some players

Version 3.7 introduces a limited test for Tiered Client Resource Downloads. The feature is designed to let players choose a resource tier that better matches their device and preferred graphics quality. It will be released in stages on PC through the official launcher, while the notice says all Android and iOS devices will receive access after the Version 3.7 update.

There is one important exception. Some PC players selected for the test may receive a launcher update during Version 3.6. Because of cross-version differences, those selected accounts temporarily cannot use the normal Version 3.7 pre-download. They will choose and download an appropriate resource tier after the update instead. PC players who are not selected can pre-download normally, with the High-Definition resource tier used by default.

Mobile pre-download also covers only part of the resources. After Version 3.7 is installed, the remaining tiered resources are downloaded according to the package chosen on the device. A smaller initial download therefore does not necessarily mean the client is fully ready. Leave Wi-Fi and storage available for the second stage.

The compensation requires an eligible account before maintenance

Kuro Games lists 300 Astrite and 2 Crystal Solvents as the planned maintenance compensation. To qualify, a player must create a character and unlock the Mail feature before maintenance begins at 04:00 UTC+8 on September 30. The compensation remains claimable until the next version update. If maintenance is extended, Kuro Games says it will issue a follow-up and adjust compensation accordingly.

New players should not wait until the last hour to create an account. Reaching the point where Mail is unlocked takes time, and a queue, patch download, or login problem can close the eligibility window unexpectedly. Existing players should make sure they can still access the correct account and server before September 30.

The 300 Astrite is useful, but it should be added to an existing pull budget rather than treated as a reason to change targets. Version 3.7 introduces Hsin and Suoming alongside their featured weapons, while the broader update also adds a new area, Echoes, events, and system improvements. The announced content is summarized in the Version 3.7 launch overview.

Finish Version 3.6 and set a launch-day spending plan

Before maintenance, complete time-limited Version 3.6 tasks, collect unclaimed event rewards, spend expiring shop currency, and finish any daily activity that would otherwise fall inside the downtime. Take a screenshot of your current Astrite, Radiant Tide, Forging Tide, and pity count. That small record makes it easier to separate free update income from any Lunite purchase after the banners open.

Do not top up solely because the update is downloading. Wait until the live Convene page confirms the character order, weapon banner, remaining time, and your existing pity. If you decide to use a Wuthering Waves Lunite top up on Treabar, calculate from the gap between your current resources and a chosen stopping point. Hsin, Suoming, and their weapons should be separate budget decisions, not one open-ended launch-day total.

The practical launch sequence is simple: free enough storage, begin pre-download on September 28, verify the installed version after maintenance, claim the 300 Astrite and 2 Crystal Solvents, review the live banners, and only then decide whether more Lunite is needed.

Frequently asked questions

When does Wuthering Waves 3.7 pre-download start?

It begins on September 28, 2026 at 10:00 UTC+8. That is September 27 at 19:00 Pacific Daylight Time, 22:00 Eastern Daylight Time, and September 28 at 03:00 British Summer Time.

How large is the Wuthering Waves 3.7 download?

The PC package is about 26GB and needs approximately 46GB free for pre-download and installation. Android and iOS download about 13GB and need roughly 20GB free.

When is Version 3.7 maintenance?

Maintenance is scheduled for September 30 from 04:00 to 11:00 UTC+8. In the United States, it runs during September 29 afternoon and evening.

Who receives the 300 Astrite compensation?

Players who create a character and unlock Mail before maintenance begins are eligible. The announced reward is 300 Astrite and 2 Crystal Solvents.

Why is pre-download unavailable on some PC accounts?

Some players selected for the tiered resource download test may receive a Version 3.6 launcher update that temporarily disables normal pre-download. They can choose their resource tier after Version 3.7 launches.