I have the orange dive 70 aka huawei y6 .it's safe to flash a huawei y6 stock rom?

I HAVE THE ORANGE DIVE 70 AKA HUAWEI Y6 .IT'S SAFE TO FLASH A HUAWEI Y6 STOCK ROM? I really want to escape from the themed menus of Orange. they're horrible. Please, if someone tried that please let me know.

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