Marshmallow on Z3TC, should I update? - Xperia Z3 Tablet Compact Q&A, Help & Troubleshooti

I also asked this in the "Ask Away" topic but I'm not sure who reads that!
I have a wifi Z3TC on Lollipop (SGP611 on 5.1.1) which I'm happy with. Except that it keeps nagging me to update to Mashmallow.
Should I update? Are there any horror stories about battery life, slowing down or anything?
If not, is there any way I can turn off that irritating update nag?
many thanks

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Yes

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the best u can do for yourself and this masterpiece is to downgrade to KITKAT via flashtool ?
Peace to all

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I'm on 6.0.1 super smooth and fast with 6hrs sot. Why is the benefit to downgrading to kitkat?

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also supersmooth on kitkat...the benefit is 10-11 hours SOT.If I had to do with less than 8 hours dude,I wouldn't even buy this!If u see the first reviews of Z3C that were while Z3C was on KITKAT..you will see that it goes up to 11 hours.I can confirm this from a friend of mine.He had 7 hours on MM and then after downgrading we went on 10-11 and he is still thanking me ?
Peace to all

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kos25k said:
also supersmooth on kitkat...the benefit is 10-11 hours SOT.If I had to do with less than 8 hours dude,I wouldn't even buy this!If u see the first reviews of Z3C that were while Z3C was on KITKAT..you will see that it goes up to 11 hours.I can confirm this from a friend of mine.He had 7 hours on MM and then after downgrading we went on 10-11 and he is still thanking me ?
Peace to all
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As long as performance is up to par. I wouldn't sacrifice performance for battery

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as u wish dude..Also don't forget that most people say that smoothness on KK is better both from LP and MM ??
Peace to all

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kos25k said:
as u wish dude..Also don't forget that most people say that smoothness on KK is better both from LP and MM ??
Peace to all
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What build. Can u post the link..

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search it on google dude it's long time now I downloaded I don't remember!And flash it with flashtool.If u are rooted I suggest u make also this http://forum.xda-developers.com/crossdevice-dev/sony/kk-debloating-script-xperia-phones-t3192846.I did these and about 9 months now I never did a f.reset and have about 100 apps
Peace to all

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kos25k said:
search it on google dude it's long time now I downloaded I don't remember!And flash it with flashtool.If u are rooted I suggest u make also this http://forum.xda-developers.com/crossdevice-dev/sony/kk-debloating-script-xperia-phones-t3192846.I did these and about 9 months now I never did a f.reset and have about 100 apps
Peace to all
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One thing I have to have is screen mirroring. Does that build have that.

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yes.both through wifi and mhl cable.but I had problems with mhl.it was showing fine.but wifi didn't work when connecting mhl cable.some say it is cheap cable theme,but I don't know.for wifi mirroring I think it is ok when I tested.(there is also a fix for root users if it doesn't work)I can't help u anymore,but I think if u aren't rooted and have good cable,u. won't have problems.sorry but I don't know further!
Peace to all