Questions about the root

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Hello everybody,

A few days ago, I 've rooted my HTC Tattoo, with the 1 click zip file. It worked perfectly, thanks to everybody who developped this...
I 've a few questions:
1° Is it possible to instal bootloader, and then, to fastboot, and then to install a-swapper (is this a good idea????)
2° Is it possible to unroot and HTC, if there is abig problem??

Thanks a lot for your work

1. No. We'll need to wait for a Engineering SPL or S-OFF SPL, which doesn't look like it'll happen any time soon.
2. Yes, you can just reflash the tattoo with a stock RUU ROM and you're fine.