Software Update: Small security patch from carrier - install it or not?

On my Mega 6.3 I527M, I just received a notification for a security patch (screenshot attached). The notification is annoying as it's a consistent one, it's always there. I was wondering if it's safe to let it be installed?! I'm asking this because, I don't want to lose my root. For my phone, I gained root with my much difficulty and anticipation! It's still Knox 0x0 which is important to me and rooted. It's all good. So, if letting this patch be installed won't affect my rooted phone, please let me know I'll do it. If not, is there any way to get rid of this notification? It says patch downloaded... where Android stores these downloads so I can take a look?
I'm willing to install this patch 'manually' too, if it's possible?

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[Q] System really small Help!!

Hello!
Today I installed Unikernel on my S6 to root it. Everything worked fine, and looked normal, but I restarted my phone and after that everything looks really tiny... I have no idea how to change it to normal and I hope for your help. I didn't change a thing since rooted, only greenify.

Small 'blemish' (?) On the screen

On dark backgrounds or pages, sort of low on the screen, I always see a blueish blob apart from the rest of the screen. I've read that could be from pressure but I'm not very sure.. Any ideas? It's fairly annoying.

Sent from my XT1575 using XDA Free mobile app

Downloaded small apps don't work on the 1.232 fw

Days ago I updated my Z2 from the 1.200 fw to 1.232. At first I just cleared cache and dalvik cache, and didn't clear data. That made something wrong with my phonebook, so I did a factory reset and flashed again. This time my phonebook is OK but those small apps, Mirror, Currency, and Units, downloaded from Google Play Store and made by Sony, don't work. They just don't show up when I tap their icons. I found that some people commented on Google Play Store that they didn't work on their phones, too, but most comments are about old versions. However, those stock small apps work well. I flashed Z5 small apps and framework, and they worked on my Z2 on the 1.200 fw. Is there anyone who has the same problem as me? How can I solve it? Thx.

Is the S2 just a little too small?

Coming from my 2014 360, it seems that the S2 is a bit small. Does anyone else feel this way or is it only my perception after wearing the bulky 360? What is weird, the 360 is actually thinner. I was hoping to use the 360's charger as a second charger but the S2 is too thick.

Any 'small' phones as good as Xperias?

Looking for some input about this. I hate big phones. My Xperia Z1c is as big as I'll ever use (4.3" display). I have seen other phones this small that seem good, but the specs usually pale in comparison to Xperia compact phones. I know sometimes specs don't tell the whole story, (a 1.2 GHz CPU might work as good or better than a 2.1 GHz CPU depending on how the software handles it), so what have you all found. Do any other small phones stand up?