Honkai Star Rail version 4.5 lands on August 26, 2026, bringing two summer-themed five-star characters, a fresh region called Astropolis, and a full slate of events. The update splits into two banner phases and includes three livestream redeem codes that are live now.
Quick answer: Redeem the three codes below before August 15, 2026 at 23:59 (UTC+8), then wait for the 4.5 update to go live on August 26, 2026. Both work independently of each other.
Release status and date
Status: Confirmed. Version 4.5 releases on August 26, 2026. New characters and their gear split across two phases, with Robin – Summeretto anchoring the first phase and Aventurine – Waveflair headlining the second.
| Item | Detail |
|---|---|
| Update version | 4.5 |
| Release date | August 26, 2026 |
| Phase 1 five-star debut | Robin – Summeretto |
| Phase 2 five-star debut | Aventurine – Waveflair |
| New region | Astropolis |
Livestream redeem codes and rewards
Three codes were shared during the 4.5 program, each worth 100 Stellar Jades plus a bonus. They expire on August 15, 2026 at 23:59 (UTC+8), so claim them before that deadline. Enter them in-game or through the official HoYoverse code redemption page.
| Code | Rewards |
|---|---|
| 2TKRKAR6YG2X | 100 Stellar Jades, 50,000 Credits |
| LSJ9JARPZH33 | 100 Stellar Jades, 5 Traveler’s Guide |
| YAJQ2TR6ZY2P | 100 Stellar Jades, 4 Refined Aether |
Once the code applies, the rewards drop into your in-game mail, and the code turns invalid on a second attempt. On top of these, logging in for 7 days after 4.5 goes live grants 10 Special Star Rail Passes.
Banner schedule for both phases
Robin and Aventurine each get their summer form, named Summeretto and Waveflair. Phase 1 leads with Robin’s variant, while Phase 2 introduces Aventurine’s.
| Phase 1 featured | Phase 2 featured |
|---|---|
| Robin Summeretto | Aventurine Waveflair |
| Hyacine | Ashveil |
| Gallagher | Guinaifen |
| Qingque | Hook |
| Dan Heng | Sampo |
New Light Cones
Four new Light Cones arrive with the patch, including signatures for both summer characters.
| Light Cone | Rarity | Tied to |
|---|---|---|
| Rise and Sing | 5-star | Robin’s signature |
| Summer Rides the Surf | 5-star | Aventurine’s signature |
| A Little Gateaway | 4-star | — |
| Race to the Horizon | 4-star | — |
Astropolis region and Trailblaze Missions
The new area of Astropolis opens up in 4.5, taking you to a fresh location. Two Trailblaze Missions come with it, titled To Roll the Stars in Astropolis and How to Lose Your Way to the Top: The Zero-Dollar Strategy.
Events and game mode update
Several events run through version 4.5, and the Divergent Universe game mode updates to a new chapter called Arcadian Chronicles.
- Overdrive: Whirlwind Grand Prix
- Minuscule Great Adventure
- Planar Fissure
- Realm of the Strange
- Divergent Universe: Arcadian Chronicles
Cosmetics and the Zenless Zone Zero collab
A new Digital Emote Standee headwear cosmetic for the Trailblazer goes into the shop with 4.5. Separately, a Zenless Zone Zero x Honkai Star Rail collaboration is set to arrive during Winter of 2026, so no exact date is confirmed for that crossover yet.
If you only do one thing before the update, it’s grabbing the three codes while they’re still active. Everything else, from the summer banners to Astropolis, unlocks once 4.5 goes live on August 26.
