I've studied all 8 pages of current Q&A forum and did not found a guide or instructions on how to dump stock ROM from not-yet rooted pre-.402 BL-locked device into FTF or other flashable format (complete out of the box stock).
Everything which I've read points to PC Companion and download route, however Support Zone downloads latest version .402 in both Update and Repair scenarios. I've even tried to fool the tool with "no update "XML responses (I can provide details), but it did not work: 402 only.
I can see people posting .36 FTFs for regions other than mine, so I'm interested in the process how to make such FTF myself.
On a side note I'm well aware of SIN files, FTF files, Flashtool and adb-based rooting tools like EasyRoot and Community_RootToolkit.
At this point I'm not planning to unlock bootloader and loose TA, least intrusive safest backup of ROM is what I want.
I'm not a complete noob and did a week of web digging for possible approaches, so please no bashing
Thanks in advance.