Before doing this you MUST be a good experienced technician otherwise you will damage the Spansion S29GL064 flash memory IC and the board of the Huawei BM622 wireless broadband CPE modem.
Obviously, you have to open it! First you have to turn off or unplug the power and the cables from the device itself. Removed all four screws by using a match screw driver.
This is the board of the Huawei BM622 wireless broadband WiMAX CPE modem, the red mark represent the Spansion S29GL064 IC where the flash memory chip is. Other version of Huawei model BM622 its ST Micro M29W640 instead of Spansion flash memory this is just same TSOP48.
To be able to successfully removed this chip you must have a Gordak or in short a workstation "Hot-Air" blower, these equipment are cellphone technician best friend without this stuff they can not finish their job in repairing mobile phone.
Before you can start the heating stage of the flash memory Spansion S29GL064 make it sure the Hot-Air is already stable, meaning the heat and the air must be blend that is why you must be a good experienced technician so that you know how to matched the required level of heat and the air to eliminate the damage of the board especially the flash memory chip Spansion S29GL064 or ST Micro M29W640 for other version.
Another thing to remember to avoid burning the flash memory chip Spansion S29GL064 or ST Micro M29W640 before pointing the nozzle head of the Hot-Air blower to the chips while on stable required heat and air make sure TOO MUCH flux is already being applied on it.
It will not take long to heat the flash memory chip Spansion S29GL064 or ST Micro M29W640 you will be able to remove it by lifting it using a small flat blade. Never use tweezer on removing or lifting the flash memory this will result a broken pins of the chips while pulling it.
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