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I have a unlocked T-Mobile pearl and i was wondering if in installing a new firmware will lock my phone to T-mobile or any other provider of who's firmware I install. Firstofall I don't even know where to find the firmware download (link please) and how do I know which one i know which one i need. The phone came with 22.214.171.124 fw if ths can help you. I want to upgrade so i can turn off that annoying light detector that adjusts screen brightness. Tnx if anyone can answer some of theses questions i would greatly appreciate it