: Depending on the device, you might need specific software to flash the firmware. Common tools include:
After a successful flash, the device is tested with a non-Zong SIM card to confirm it can detect and connect to other networks. Important Considerations
Flashing can sometimes lead to problems. Here are common issues and solutions:
Because firmware 21.323.01.00.306 restricts open USB ports, you must manually force the device into download mode: ZONG E5573CS-322 21.323.01.00.306 DIRECT FLASH.7z
Extract the contents to a dedicated folder on your desktop using 7-Zip.
: The update process may take several minutes. Do not disconnect your device during this time.
: Make sure your device is fully charged or at least has a significant amount of battery life. Updating firmware can sometimes be a lengthy process, and you wouldn't want your device to shut down in the middle of the update. : Depending on the device, you might need
Click followed by Load . The router's LED lights will flash briefly, indicating it is ready to receive the full firmware. Step 4: Run the Direct Flash Firmware Navigate to the main firmware folder.
"ZONG E5573CS-322 21.323.01.00.306 DIRECT FLASH.7z" refers to a firmware package used to unlock or repair Zong 4G Bolt+ (Huawei E5573Cs-322)
Tweezers or a copper wire (for the boot shot/test point method). Software Requirements To extract the .7z archive. Here are common issues and solutions: Because firmware 21
❌ – wrong flash procedure or corrupted file = permanent damage ❌ No official support – Zong/Huawei won’t help if you flash this ❌ Unknown source – .7z files from forums (e.g., GSMhosting, 4pda) may contain malware or be incomplete ❌ May void warranty ❌ Could lock device further if it’s signed firmware with anti-rollback
A high-quality micro-USB data cable (do not use power-only charging cables).
Being a .7z archive, the file is a container. Based on standard Huawei firmware structures, the extracted content typically includes: