Dear Endministrator,

Pre-download for the [Sanctuary of Ink] version of Arknights: Endfield is now available. You can download some of the PC, mobile, and PlayStation®5 game resources in advance to access the game faster once the update and maintenance are complete.

Additionally, we plan to begin maintenance for the game client update on Oct. 15, 2026 at 06:00 (UTC+8). After maintenance is complete, the game will be updated to the new version [Sanctuary of Ink].

This update is mandatory. You will not be able to log into the game during the maintenance period; please plan your gaming schedule accordingly. Once the update is complete, you will need to re-download the game client. Due to the large download size, we recommend that you download the update using a stable Wi-Fi connection.

▼// Pre-Download Guide

■ PC

Open GRYPHLINK. The [Pre-Download] icon will appear to the left of the [Play] button. Click the icon to begin downloading. The pre-download size is approximately 9GB.

■ Mobile (Android and iOS)

Open the game. The [Pre-Download Resources] icon will appear on the login screen. Tap the icon to begin downloading. The pre-download size is approximately 5GB.

※ Mobile pre-download is expected to end on Oct. 15, 2026 at 05:30 (UTC+8). You will not be able to play the game during the mobile pre-download. Please plan your pre-download time accordingly.

■ PlayStation®5

Go to the home screen, select [Arknights: Endfield], press the controller's [OPTIONS] button, select [Check for Update] to begin downloading. The pre-download resources are approximately 47GB in size.

▼// Version Maintenance Time

Asia Server: Oct. 15, 2026 at 06:00 – Oct. 15, 2026 at 12:00 (UTC+8)

Americas / Europe Server: Oct. 14, 2026 at 17:00 – Oct. 14, 2026 at 23:00 (UTC-5)

▼// How to Update

After maintenance for the version update begins, you can follow the in-game instructions to proceed with the update.

· PC: After closing the game, restart GRYPHLINK and click [Update].

· Android: Enter the game and follow the pop-up prompts to complete the update.

· iOS: Enter the App Store and tap [Update].

· PlayStation®5: Go to the home screen, select [Arknights: Endfield], press the controller's [OPTIONS] button, select [Check for Update], and confirm the update.

▼// Update & Maintenance Compensation

· Compensation Details: [Oroberyl]×900

· Distribution Period: After the update and maintenance – Before the next version update and maintenance

· Eligibility: Create a character before the update

· Note: Update & Maintenance Compensation will be sent via in-game mail. The mail will expire during the next version update and maintenance, so please claim it in time.

▼// Update & Maintenance Details

This update is mandatory. You will not be able to log into the game during the maintenance period; please plan your gaming schedule accordingly. Once the update is complete, you will need to re-download the game client. Due to the large download size, we recommend that you download the update using a stable Wi-Fi connection. If your device has completed or started the pre-download, the amount of data you need to download after maintenance will be reduced based on the resources already downloaded, saving time during this stage of the update. The estimated storage space required for this update is as follows.

· PC: 9GB (An additional 15GB of free storage is required when extracting files. Install the game on an SSD for better gaming experiences.)

· Android: 5GB (An additional 5GB of free storage is required when extracting files)

· iOS: 5GB (An additional 5GB of free storage is required when extracting files)

· PlayStation®5: 47GB (An additional 52GB of free storage is required when extracting files)

※ Extra storage used during extraction will be freed once the extraction is complete.