W1070 Version 1.06 is a must have.
- as it has good amount of fixes + 3D support for many more resolutions + HDMI handshake issues fixed, as everyone has faced this issue worldwide, including myself.
The fixes are thus for the w1070 firmwares:
Firmware 1.03
Problem-1- To improve the flickering when smart ECO mode + dynamic setting
Problem-2- To add Background color in OSD
Firmware 1.04
Problem-1- When at low temperature environment, fan oil would become thickened, cause rotational speed of
fan cant reach target then shut down.
Problem-2- Keystone bug: When playing 3D (Frame packing), and then switch to 2D, and keystone value
cant be kept.
Firmware 1.05
Problem-1- ISF setting cannot be saved
Problem-2- compatibility problem for some unique 3D DVD players(Philips)
Problem-3- OSD Swedish language of on& off wrong translation
Firmware 1.06
Fixes:
-1- Hg bridge problem symptom: cant turn on a projector, but NDF after transportation; few cases found in BQC.
There is Hg (Mercury) in a lamp bulb. Whenever the liquid mercury make the Short-circuit of electrodes of the lamp, the unit cant
be turn on. To change the cooling status and lamp ignition behavior can make mercury condense at different locations of a bulb.
Due to Hg (Mercury) changing the location in lamp bulbs during transportation, it will be NDF in ASP.
-2- To improve power-on while system initializing
-3- To improve Philips DVD compatibility issue(BQC)
-4- Add 3D format as appendix
-5- Adjust Audio Curve for BQjp
-6- Japanese OSD correction for Cool and Warm (BQjp)
-7-To enhance HDMI searching speed
-8- To update RC code for new remote RCV011
-9- To modify the gain value to improve HDMI signal searching ability
-10- To add model name W1250 in Factory OSD (only W1070)
Added support for 3D formats:
1280x720p@59/94/60 Hz -- SBS added
1280x720p@50Hz - SBS added
[email protected]/24Hz - SBS added
[email protected]/60Hz - Top Bottom - added
1920x1080p@50Hz - Top Bottom - added
Firmware 1.07
ISF Night setting cant be keep after 2D->3D timing changed
To keep lamp hour after reset all setting in USE OSD
To improve the 32 gray level via PS3 HDMI
Modify picture mode of power off icon
Modify HSG setting in No signal condition
So as you can see above, 1.06 is must have and 1.07 is not mandatory for most users, but heard 1.07 has also improved the HDMI sync times for some users, but we should acknowledge that, as most guys from Tech background will agree with me, that companies wont expose all bug fixes to customers

i expect there will be lot of fixes hidden
Note: W1080ST is technically similar projector but Short Throw Lense, but has firmware numbering and firmware different.
W1080ST Version 1.03 = W1070 Version 1.06
W1080ST Version 1.04 = W1070 Version 1.07
W1080ST is behind in version, due to it being released later than W1070 which is older.
The firmware files are different for these 2 models.
rajudhs,
The link you mention in your post for the 1.07 firmware upgrade for W1070 does not have that file anymore. I have googled around but could not find the upgrade file. Anyway, I want to know (since you have successfully upgraded to the latest firmware version) whether the upgrade makes any significant difference for the good. Please let me know.
Thanks in advance