Rooting/Unlocking my new Play - Xperia Play Android Development

Hi,
New to the Xperia Play but am confident in rooting through other devices, X10, Galaxy S2, Armani S etc.
Now in the guides it asks to flash the .181 before upgrading to .184 if not an unlocked bootloader or flashing .184 direct if it is unlocked.
I am currently using .145 which isnt listed in the guide.
Can anyone confirm if there's a difference or if I'm on a ROM which can't have the bootloader unlocked??
Thanks.
Edit: I can connect via fastboot and get a version 0.3 returned after doing the getjar version command. So really, is the .184 the best update to go to as opposed to a .145?

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Follow this guide here. Just flash the .184 then root and then ota update to 2.3.3. You will be rooted on 2.3.3 build .145.
builds;
R800i:
3.0.A.2.181 // 7X30A-AAABQMAZM-1290_14-10 (forgot android version)
3.0.A.2.184 // 7X30A-AAABQMAZM-1290_14-14 (2.3.2)
3.0.1.A.0.145 // 7X30A-AAABQMAZM-1290_21-22 (2.3.3)
.145 is not listed because gingerbreak doesnt work on 2.3.3 and is the latest version you are upgrading to. It only works on builds .181 or .184 so you need to flash the previous version (.184 (2.3.2) in the guide above, you dont need to flash .181 and .184 just the previous version or 2.3.3 which is .184) for root access to succeed then use ota to keep root.
If you bought an r800i then the bootloader is unlockable. Go here if you want to unlock http://unlockbootloader.sonyericsson.com/instructions but if all you want is root then unlocking the bootloader is not needed atm (just follow the guide in the link above) you can unlock later if you want to install cm7 when the bugs are worked out or any other custom rom.
So really, is the .184 the best update to go to as opposed to a .145?
Click to expand...
Click to collapse
.184 is 2.3.2, .145 is 2.3.3 the latest version out atm you only need to go to .184 so rooting with gingerbreak will work then you use ota to upgrade to .145 with root still enabled