If I'm not mistaken, you can use adb to install apps, don't quite remember the process, but a little Googling should reveal the process.
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Try opening terminal emulator, the typing "su" without the quotes, then "reboot recovery" without the quotes again.
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I don't see why that would have any effect on the throttling as you are just adding the use of a few extra towers. Still using virgin mobile bandwidth regardless.
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When I'm in the Orlando area I'll push 2mbps fairly consistently, but only 200-1500kbps in my city, depending on what part of town I'm in.
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