Flashed .266 firmware C5302 Indonesia, did a factory reset, and I can confirm these changes (bug and improvement)
Bugs:
- The handset is easily heating up now. And when it gets hot enough the screen suddenly gets unresponsive. It's like lagging. I have never faced my SP lagging before. Seriously...
- Walkman music light is almost not blinking at all on high volume.
- Bravia Engine is there, but the effect is gone.
- Camera quality is still the same. So much blurr on several objects with the same/similar color, like leaves. I expect something more from this given the hardware. My Xperia ray could shoot much better.
- Your picture on "Myself" contact won't show up on Messaging message bubble.
- RAM management could be better.
- Everyone said that the battery life has improved, but as for me it's not. Even worse. Probably due to the white theme.
Improvements:
+ I love the new speed. I can feel that it's snappier than before now.
+ I like the new screen transition.
+ The new appearance is definitelly better. But for me personally, I prefer the dark theme.
+ Bug on textbox is gone
+ The offline charging bug is gone too
+ Well, basically everything else is good. Well done Sony.
Seems like the bugs do exist globally.
Oh, and a few tips from me to make the screen to be more IPS like, go to Settings > Display > White Balance, and apply these values:
Saturation 7.5
Hue 240.0°
Thank you 
@Bee-Ant wrote:
Flashed .266 firmware C5302 Indonesia, did a factory reset, and I can confirm these changes (bug and improvement) Bugs: - The handset is easily heating up now. And when it gets hot enough the screen suddenly gets unresponsive. It's like lagging. I have never faced my SP lagging before. Seriously... - Walkman music light is almost not blinking at all on high volume. - Bravia Engine is there, but the effect is gone. - Camera quality is still the same. So much blurr on several objects with the same/similar color, like leaves. I expect something more from this given the hardware. My Xperia ray could shoot much better. - Your picture on "Myself" contact won't show up on Messaging message bubble. - RAM management could be better. - Everyone said that the battery life has improved, but as for me it's not. Even worse. Probably due to the white theme. Improvements: + I love the new speed. I can feel that it's snappier than before now. + I like the new screen transition. + The new appearance is definitelly better. But for me personally, I prefer the dark theme. + Bug on textbox is gone + The offline charging bug is gone too + Well, basically everything else is good. Well done Sony. Seems like the bugs do exist globally. Oh, and a few tips from me to make the screen to be more IPS like, go to Settings > Display > White Balance, and apply these values: Saturation 7.5 Hue 240.0° Thank you
but flashing a ftf messes up your future updates right?
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