diff --git a/browser/app/module.ver b/browser/app/module.ver
index 339bde8d624b..8eef078e7f1b 100644
--- a/browser/app/module.ver
+++ b/browser/app/module.ver
@@ -1,7 +1,7 @@
 WIN32_MODULE_COMPANYNAME=Mozilla
 WIN32_MODULE_COPYRIGHT=©Firefox and Mozilla Developers, according to the MPL 1.1/GPL 2.0/LGPL 2.1 licenses, as applicable.
-WIN32_MODULE_PRODUCTVERSION=1,0,0,0
-WIN32_MODULE_PRODUCTVERSION_STRING=1.0+
+WIN32_MODULE_PRODUCTVERSION=1,6a1,0,0
+WIN32_MODULE_PRODUCTVERSION_STRING=1.6a1
 WIN32_MODULE_TRADEMARKS=Firefox is a Trademark of The Mozilla Foundation.
 WIN32_MODULE_DESCRIPTION=Firefox
 WIN32_MODULE_PRODUCTNAME=Firefox
diff --git a/browser/config/version.txt b/browser/config/version.txt
index 830736f12869..d6cee29b73ad 100644
--- a/browser/config/version.txt
+++ b/browser/config/version.txt
@@ -1 +1 @@
-1.0+
\ No newline at end of file
+1.6a1
diff --git a/browser/installer/windows/installer.cfg b/browser/installer/windows/installer.cfg
index aea6a3ae50e8..0eca858068f8 100644
--- a/browser/installer/windows/installer.cfg
+++ b/browser/installer/windows/installer.cfg
@@ -14,4 +14,4 @@ FileInstallerNETRoot      = @PKG_BASENAME@.net-installer
 ComponentList             = xpcom,browser,talkback,@AB_CD@,adt,reporter
 LicenseFile               = browser/EULA
 7ZipSFXModule             = other-licenses/7zstub/firefox/7zSD.sfx
-GREVersion                = 1.7.5
+GREVersion                = 1.9a1