[MT7-TL10] Firmware, [Need Help]

i have mate 7 with build number c900b324 i am new user of huawei and literaly know nothing abpout huawei, i want to upgrade it to MM from Lollipop, cananyone guide me how to it, and plz tell how to flash and does the build number have any isuues with firwares, or any firmware will work

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