Update index.md (#859)

* Update index.md

* Update pasteur-bsc.md

Author: joey0612

docs/announce/index.md

@@ -4,8 +4,8 @@
 <div class="doc-announce">
     <a href="./pasteur-bsc/">
         <div>
-            <div class="announce-title">Pasteur Upgrade of BSC Chapel Testnet</div>
-            <div class="announce-desc">3 BEPs on BSC Chapel Testnet</div>
+            <div class="announce-title">Pasteur Upgrade of BSC</div>
+            <div class="announce-desc">3 BEPs on BSC</div>
         </div>
         <span class="announce-date">2026 Jul 21st</span>
     </a>

docs/announce/pasteur-bsc.md

@@ -8,9 +8,10 @@
 The Pasteur upgrade will happen at:
 
 - Testnet:  2026-07-21 02:30:00 AM UTC
+- Mainneg:  2026-08-25 02:30:00 AM UTC
 
-## Upgrade to BSC Node v1.7.6 Before Hardfork
-[v1.7.6](https://github.com/bnb-chain/bsc/releases/tag/v1.7.6) is a hard fork release for BSC Chapel testnet, the HF name is: Pasteur. All BSC Chapel testnet nodes **must upgrade to v1.7.6 before the hard fork time**.
+## Upgrade to BSC Node v1.7.7 Before Hardfork
+[v1.7.7](https://github.com/bnb-chain/bsc/releases/tag/v1.7.7) is a hard fork release for BSC Mainnet; the HF name is Pasteur. All BSC Mainnet nodes **must upgrade to v1.7.7 before the hard fork time**.
 
 There are 3 BEPs in Pasteur, as listed in [BEP-673: Hardfork Meta-Pasteur](https://github.com/bnb-chain/BEPs/blob/master/BEPs/BEP-673.md):