What this app is
Extra Firmware Catalog Drong Cast, developed by Goodsleep, Ltd., is a free toolset for managing mobile device firmware. It lets users find and install firmware builds for supported phones and tablets, including legacy releases that some people prefer for stability or compatibility.
Complete firmware archive
The application maintains a comprehensive repository of firmware releases. Every past public version for each supported model is available, so users can locate specific builds by exact version number.
- Access historical firmware files for older models.
- Browse the full set of releases organized by device family.
- Search for exact build numbers when you need a particular revision.
How firmware is organized
Firmware entries are grouped by product series and device model to make finding the correct files straightforward. Clear labeling helps prevent accidental selection of incompatible builds.
- Series and model tags identify compatible downloads.
- Version numbers and release dates are shown for each item.
- Filters and search help narrow results to the device you’re working with.
Guided update process
Drong Cast includes step-by-step update instructions aimed at casual users and beginners, reducing the risk associated with flashing firmware. The instructions walk you through preparing the device and initiating the change.
- Simple, illustrated steps designed for first-time users.
- Troubleshooting notes and common pitfalls highlighted.
- Safety reminders and preparatory checks before starting an update.
Replacing and removing firmware
The app can remove an existing firmware installation to make way for a different version, if the device and firmware type allow it. The removal option is presented alongside install steps so users understand the full transition process.
- Remove the currently installed firmware when necessary.
- Prepare the device for a clean install of the chosen build.
- Confirm compatibility and backup recommendations before proceeding.
Compatibility and practical notes
Not all devices and carriers are supported; check the app’s compatibility list before attempting a change. Always back up important data and follow the provided guidance to minimize risk during firmware operations.
Technical
- iPhone
- Chinese (Simplified)
- English
- Chinese (Simplified)
- Free