Update README with fingerprint error handling & FirebaseHttpClient.h for US servers

README.md

@@ -32,6 +32,10 @@ If you maintain a fork of this repository that you believe is healthier than the
 
 - ESP8266 Core SDK. We recommend using officially tagged releases and it should be at least [2.4.1](https://github.com/esp8266/Arduino/tree/2.4.1)
 
+## Note for Handling Fingerprint Errors
+
+If you encounter a fingerprint error, you can update the fingerprint in the `FirebaseHttpClient.h` file located at `Documents > Arduino > libraries > FirebaseArduino > src > FirebaseHttpClient.h`. Update the fingerprint to the latest one by visiting [this link](https://www.grc.com/fingerprints.htm).
+
 ## Disclaimer
 
 *This is not an official Google product*.

src/FirebaseHttpClient.h

@@ -40,6 +40,8 @@ class FirebaseHttpClient {
 };
 
 static const char kFirebaseFingerprint[] =
-      "03:D6:42:23:03:D1:0C:06:73:F7:E2:BD:29:47:13:C3:22:71:37:1B"; // 2020-02
+      "0E:50:70:F6:8F:5D:B3:66:B2:37:F5:63:C5:8C:48:FE:75:1D:32:D5"; // 2024-02
+//8B:30:7C:08:62:CD:FF:07:0B:02:0D:1F:16:CB:2B:56:01:24:C7:3B for *.asia-southeast1.firebasedatabase.app
+//0E:50:70:F6:8F:5D:B3:66:B2:37:F5:63:C5:8C:48:FE:75:1D:32:D5 for *.us-central1.firebasedatabase.app
 
 #endif  // FIREBASE_HTTP_CLIENT_H