diff --git a/README.md b/README.md
index 1ab903a..a9558f5 100644
--- a/README.md
+++ b/README.md
@@ -4,32 +4,33 @@ Utility for extracting credentials from the Crunchyroll Android app (both TV and
 
 The [credentials](https://github.com/vitalygashkov/crextractor/blob/main/credentials.tv.json) are [automatically](https://github.com/vitalygashkov/crextractor/actions/workflows/extract.yml) updated once a week (if there are any changes).
 
-## Prerequisites
-
-- [Node.js](https://nodejs.org/en)
-- [jadx](https://github.com/skylot/jadx)
-
 ## Usage
 
-### Library
-
-```bash
-npm i crextractor
-```
-
-#### Fetch ready credentials from this GitHub repository
+### Fetch ready credentials from this GitHub repository
 
 ```js
-import { pull } from 'crextractor';
+// Supported targets: mobile, tv
+async function fetchCredentials(target = 'tv') {
+  const url = `https://raw.githubusercontent.com/vitalygashkov/crextractor/refs/heads/main/credentials.${target}.json`;
+  return fetch(url).then((response) => response.json());
+}
 
 async function main() {
-  const credentials = await pull('tv');
+  const credentials = fetchCredentials();
+
+  // You can use credentials to obtain access tokens for Crunchyroll APIs
+
+  // 3.54.5 (22304) -> 3.54.5_22304
+  const userAgentAppVersion = credentials.version
+    .replace(' ', '_')
+    .replace('(', '')
+    .replace(')', '');
 
-  // You can use the extracted credentials to obtain access tokens for Crunchyroll APIs
   const response = await fetch('https://beta-api.crunchyroll.com/auth/v1/token', {
     headers: {
-      Authorization: credentials.authorization, // Ready HTTP header in the format `Basic <encoded>`, can be used to access some Crunchyroll APIs
-      'User-Agent': 'Crunchyroll/ANDROIDTV/3.42.1_22267 (Android 16; en-US; sdk_gphone64_x86_64)',
+      // Ready HTTP header in the format `Basic <encoded>`, can be used to access some Crunchyroll APIs
+      Authorization: credentials.authorization,
+      'User-Agent': `Crunchyroll/ANDROIDTV/${userAgentAppVersion} (Android 16; en-US; sdk_gphone64_x86_64)`,
       // ...
     },
     method: 'POST',
@@ -40,23 +41,12 @@ async function main() {
 }
 ```
 
-#### Extract credentials from the latest APK using jadx
+### Extract fresh credentials from the latest APK using jadx
 
-```js
-import { extract } from 'crextractor';
+#### Prerequisites
 
-async function main() {
-  const { id, secret, encoded, authorization } = await extract();
-  // id - Crunchyroll app ID
-  // secret - Crunchyroll app secret
-  // encoded - Base64 encoded `id:secret` string
-  // authorization - ready HTTP header in the format `Basic <encoded>`, can be used to access some Crunchyroll APIs
-
-  // Do something with the extracted credentials
-}
-```
-
-### Command-line interface
+- [Node.js](https://nodejs.org/en)
+- [jadx](https://github.com/skylot/jadx)
 
 ```bash
 npx crextractor --target mobile --output ./credentials.mobile.json