: Denotes the downgrade-compatible firmware build version engineered to bypass boot security locks on this modem.
: The device should be charged, but it is best done with the battery removed and USB connected to the PC. 7-Zip : Software to extract the .7z file. Step-by-Step Guide to Using the Flash File ZONG E5573CS-322 21.323.01.00.306 DIRECT FLASH.7z
regarding device portability in your region. ZONG E5573CS-322 21.323.01.00.306 DIRECT FLASH.7z