Firmware Change Update On Blackberry 9790 Bold May 2026

Before changing the firmware, skipping these steps can brick your device.

The BlackBerry 9790 Bold, released in late 2011, occupies a unique space in smartphone history. Positioned as a smaller, more portable sibling to the iconic BlackBerry 9900, it combined a tactile QWERTY keyboard with a high-resolution 2.45-inch capacitive touchscreen. While modern users are accustomed to OTA (Over-The-Air) updates for iOS and Android, the firmware process on the BlackBerry 7.1 OS-based 9790 was a different beast altogether. Firmware Change Update on BLACKBERRY 9790 Bold

Performing a firmware change update on the BlackBerry 9790 Bold is not merely about patching security vulnerabilities; it is about revitalizing device performance, improving radio frequency (RF) stability, extending battery life, and unlocking hidden features. This article provides an exhaustive, step-by-step walkthrough of the firmware update process—from preparation to post-installation optimization.

Unlike modern smartphones that separate the operating system from low-level hardware drivers, the BlackBerry 9790 ran on a tightly integrated proprietary OS. A firmware update on this device did not merely add new wallpaper or ringtones; it redefined how the 1GHz processor managed power, how the 768MB of RAM interacted with the GPU, and how the radio stack communicated with 3G networks. These updates, often released as bundles via BlackBerry Desktop Manager or Over-The-Air (OTA), were critical for correcting deep-seated memory leaks and the infamous "clock spinning" lag that plagued early builds of OS 7.0 and 7.1.

This is the classic, most reliable method.

Step 1: Install BlackBerry Desktop Software v7.1 Download from archive.org (version 7.1.0.42 B37). Install on Windows 7, 8, or 10 (Windows 11 requires compatibility mode).

Step 2: Install the New Firmware to Your PC Run the downloaded .exe firmware file (e.g., 9790_7.1.0.1098_P7.1.0.569.exe). This extracts OS files to: C:\Program Files (x86)\Common Files\Research In Motion\Shared\Loader Files Performance Improvements

Step 3: Delete the Vendor.xml File (Crucial!) Navigate to: C:\Program Files (x86)\Common Files\Research In Motion\AppLoader Delete Vendor.xml. This bypasses carrier locks, allowing any 9790 to accept the firmware.

Step 4: Wipe the Device (Optional but Recommended) Use JL_Cmder or BlackBerry Swiss Army Knife (BBSAK) to perform a full wipe. Enter wipe command. Your 9790 will show a "Reload Software: 507" error – this is correct.

Step 5: Launch the App Loader Still in the AppLoader folder, double-click Loader.exe. Do not use Desktop Manager’s automatic update.

Step 6: Select Your Firmware The Loader will detect your 9790 (even with error 507). Click Add to select the new OS. Ensure the box for "BlackBerry 7.1.0 System Software" is checked.

Step 7: Customize Components Uncheck unnecessary languages and fonts to save space. Always keep: Connectivity Fixes

Step 8: Initiate the Flash Click Next. The progress bar will show:

Do not disconnect USB. The device may reboot several times – this is normal.

If your phone is glitchy, freezing, or you want a fresh start, you should perform a security wipe or reload the OS.

Since OTA updates are dead, you must use a Windows PC. (Mac support for legacy BlackBerry Link is largely defunct).

Prerequisites:

In 2025, "official" BlackBerry firmware is static. However, the community has created custom builds.