thank you all. i think i will try to flash it to 1.3 001

however, since my version is PR_341 , does that mean I am carrier branded and I have to do "De-brand phone: Comprehensive reset" then another flash to "Upgrade operating system: Replace operating system" ?

based on this thread https://talk.maemo.org/showthread.php?t=82693)
Warning: Installation of generic firmware images on certain carrier-branded phones seems to be blocked - if you're currently running a carrier-branded firmware image, it's recommended to wait for more details.
2xx, 3xx, 4xx - "Country Variant" and carrier-branded images

so, i'm guessing i think i can just flash directly to this:
DFL61_HARMATTAN_40.2012.21-3_PR_LEGACY_001-OEM1-958
DFL61_HARMATTAN_40.2012.21-3_PR_LEGACY_001-OEM1-958_ARM.bin

with this flasher: WinFlasher_3.12.1.exe

and then continue the #2-8 steps from Aspergerguy's sticky ?

the phone works well, wifi, mms, calling... still kinda scared to do my first flash but i guess i will try
( i don't really need gps/maps or apps, or even web browsing since i still use a secondary phone for all that)