diff --git a/packages/puppeteer-core/src/node/FirefoxLauncher.ts b/packages/puppeteer-core/src/node/FirefoxLauncher.ts
index fa245913643..c65d7b50220 100644
--- a/packages/puppeteer-core/src/node/FirefoxLauncher.ts
+++ b/packages/puppeteer-core/src/node/FirefoxLauncher.ts
@@ -194,7 +194,7 @@ export class FirefoxLauncher extends ProductLauncher {
       });
       const localRevisions = browserFetcher.localRevisions();
       if (localRevisions[0]) {
-        this.puppeteer.configuration.browserRevision = localRevisions[0];
+        this.actualBrowserRevision = localRevisions[0];
       }
     }
     return this.resolveExecutablePath();
diff --git a/packages/puppeteer-core/src/node/ProductLauncher.ts b/packages/puppeteer-core/src/node/ProductLauncher.ts
index 5c4619585b5..62ef808f237 100644
--- a/packages/puppeteer-core/src/node/ProductLauncher.ts
+++ b/packages/puppeteer-core/src/node/ProductLauncher.ts
@@ -38,6 +38,11 @@ export class ProductLauncher {
    */
   puppeteer: PuppeteerNode;
 
+  /**
+   * @internal
+   */
+  protected actualBrowserRevision?: string;
+
   /**
    * @internal
    */
@@ -65,6 +70,15 @@ export class ProductLauncher {
     throw new Error('Not implemented');
   }
 
+  /**
+   * Set only for Firefox, after the launcher resolves the `latest` revision to
+   * the actual revision.
+   * @internal
+   */
+  getActualBrowserRevision(): string | undefined {
+    return this.actualBrowserRevision;
+  }
+
   /**
    * @internal
    */
diff --git a/packages/puppeteer-core/src/node/PuppeteerNode.ts b/packages/puppeteer-core/src/node/PuppeteerNode.ts
index ca16645ee18..6c96c862229 100644
--- a/packages/puppeteer-core/src/node/PuppeteerNode.ts
+++ b/packages/puppeteer-core/src/node/PuppeteerNode.ts
@@ -217,7 +217,11 @@ export class PuppeteerNode extends Puppeteer {
    * @internal
    */
   get browserRevision(): string {
-    return this.configuration.browserRevision ?? this.defaultBrowserRevision!;
+    return (
+      this.#_launcher?.getActualBrowserRevision() ??
+      this.configuration.browserRevision ??
+      this.defaultBrowserRevision!
+    );
   }
 
   /**
@@ -292,19 +296,22 @@ export class PuppeteerNode extends Puppeteer {
     options: Partial<BrowserFetcherOptions> = {}
   ): BrowserFetcher {
     const downloadPath = this.defaultDownloadPath;
-    if (downloadPath) {
+    if (!options.path && downloadPath) {
       options.path = downloadPath;
     }
     if (!options.path) {
       throw new Error('A `path` must be specified for `puppeteer-core`.');
     }
-    if (this.configuration.experiments?.macArmChromiumEnabled) {
+    if (
+      !('useMacOSARMBinary' in options) &&
+      this.configuration.experiments?.macArmChromiumEnabled
+    ) {
       options.useMacOSARMBinary = true;
     }
-    if (this.configuration.downloadHost) {
+    if (!('host' in options) && this.configuration.downloadHost) {
       options.host = this.configuration.downloadHost;
     }
-    if (this.configuration.defaultProduct) {
+    if (!('product' in options) && this.configuration.defaultProduct) {
       options.product = this.configuration.defaultProduct;
     }
     return new BrowserFetcher(options as BrowserFetcherOptions);