Update Drush 6.0.2. to v. 7 or 8 - drush

So I have some Drupal Webportals based on the Drupal 7.x version.
I also have on mine server, Drush installed.
When I do on Drush an version check. It's show's me that I have version 6.0.2.
How can I upgrade/update to the version 7 or 8 of Drush?
Thanks in advance

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What is the last Flutter version compatible with Xcode 11.3.1?

I'm trying to build my Flutter app on Mac os Catalina. And would like to support old phone like Ipad 2. I read on a post the maximun version of Xcode should be 11.3.1, so i install that then install the newest version of Flutter.
But when if run
flutter build ios
i got Found "Xcode 11.3.1, Build version 11C505". Xcode 12.0.1 or greater is required to develop for iOS.
So i'm trying to downgrade Flutter to the lastest version compatible with Xcode 11.3.1.
Found list of old releases but it's not easy get infos on compatibility with Xcode.
I use command line only (because VMware too slow).
At my MBP mid 2012 and iMac late 2012 with Mojave 10.14.6 and Xcode 11.3.1, I have flutter 2.0.6.
After install, if you run flutter -v doctor, you will receive a message:
"! Xcode 11.3.1 out of date (12.0.1 is recommended).
Download the latest version or update via the Mac App Store."
but you can run flutter code without troubles.
If I try run flutter 2.2.X, ‘flutter -v doctor’ returns a message that Xcode 12 is need.
Disclaimer for macOS 10.14.6 users:
I remember when I installed flutter, at some point I needed install gems dependencies, but I had trouble because I was using Mojave 10.14.6, Xcode and flutter.
If you have troubles with gems installation, please go to Error while installing json gem 'mkmf.rb can't find header files for ruby'
and check my answer for Mojave 10.14.6 (answered Nov 18 '20 at 14:08)

How can I install Netbeans 8.2 with JDK 8 on Big Sur

I am having a problem with installing Netbeans 8.2 on my new MacBook Pro 13 (M1). I already have Netbeans 8.2 installed on my PC desktop, but I can't install it on my Mac. It's isn't my first time that I installed it on a pc, but this time I really don't know how to install it. First thing what I did was to download the JDK 8 file to my Mac and installed it (https://www.oracle.com/java/technologies/javase/javase-jdk8-downloads.html), after that I dowloaded Netbeans 8.2 (version "All", https://netbeans.org/downloads/old/8.2/) and installed it. But now comes my problem, when begin installing it, a pop-up pops up (No Java found, NetBeans IDE cannot be installed. This software can be installed with Java 8 or newer. Please download and install the latest update of Java 8 from http://www.oracle.com/technetwork/java/javase/downloads/index.html and restart NetBeans installation.) So now I am stuck. I have looked everywhere on the internet to find the problem solve it but found nothing. I would love to get some help with my problem. Thank you./(PS. I am new in the world of Mac-os. I have tried some advise's from stack overflow to get working with the terminal, but no success.)
I have solved it! I first needed to download "Homebrew" on my Mac and after that I downloaded Netbeans 8.2 in the terminal with this "brew install --cask netbeans-java-se" after that I needed to edit the my path and now it works fine.
go to terminal then paste this command. 'brew install --cask netbeans'

Which is the last release of quickfix that support Java 7?

The last version de QuickFix need Java 8, but I can't find info about which is the last for JDK 7, could you help me.
According to the QFJ 2.0.0 release notes they started using the Java 8 Date/Time API in that release, and it is mentioned that "You need at least Java 8 to run QuickFIX/J". The major version was bumped because of this breaking change.
That means that the latest QuickFIX/J version supporting Java 7 should be the 1.6.4 release.

TD 6.2 and Windows 10 compatibility

Asked by Sushree under the 'Centura' tag. :
Is Gupta Team developer 6.2 compatible with Windows 10 ? We are upgrading our systems from windows 7 to windows 10 and we have Centura version 6.2. Do we have to upgrade the Centura to a higher version or will Windows 10 support the current version?
Asked and answered under the 'Centura' Tag. The 'GuptaTeamDeveloper' tag is more appropriate,
so included here is a Link to it for anyone needing help on Gupta Team Developer version compatibility .
TD 6.2 and Windows 10 compatibility is answered here:

Options for iOS 4.2.1 Development in 2015

I have an old 2G iPod Touch for which I'd like to develop a very simple application. I managed to install Xcode 3.2.5 (the first to include the 4.2 SDK) onto my Mac that runs 10.10.4, but it says it isn't compatible when I run it. Next I tried Xcode 4.4.1 (the most recent that can target iOS 4.2), but it also fails to run. So, I'm thinking that Apples tools might be a lost cause when it comes to development for 4.2.1 if I'm not willing to downgrade my Mac to an earlier OSX version.
Do I have any other options for developing an iOS 4.2.1 app using one or more of OSX 10.10.4, Windows 10, and Ubuntu 14.04? Are options like Xamarin more flexible when it comes to the iOS versions they can target? Thanks in advance for any suggestions.

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