Open a command prompt as Administrator:
A very frequent error during the final update process. It often indicates a mismatch between the loader and the flash file or a protected NVRAM partition. Solutions include using a different (usually older) version of usbloader.bin .
This is the most critical step. You need to force the modem into a state where it accepts the USB Loader. e5573s320 usbloaderbin work
Getting the e5573s320 usbloader.bin to work is 30% software and 70% timing. If you fail on your first ten attempts, do not panic. The Huawei Balong chipset is notoriously resilient.
Warning: This voids your ability to use the stock recovery method. Open a command prompt as Administrator: A very
With the usbloader.bin working, you can now:
Using incorrect firmware (such as certain Zong versions) can hard-lock your device to a specific network or prevent future downgrades. This is the most critical step
The usbloader.bin is then the only tool capable of bypassing the standard protections and reloading a fresh operating system onto the device's internal memory. In the forums, this is precisely what users are trying to accomplish when they search for "e5573s320 usbloaderbin work".