[Samsung Galaxy Core Plus ROMs, Kernels, Recoveries] kruc Ire:
Mar 28 edit: "This instruction jumps around and mentions multiple ways to do it please read whole instruction before beginning and choose Odin option not ADB option :) ----originally this instruction set did not begin with enabling developer options and setting to allow ADB bridge in the developer options. This can be done by tapping the build number in "about phone" in settings 7x. Most every android phone is the same in this respect----- "

The first thing you should do since we are talking about this Samsung phone here, is to download the Odin 3.09 program. It is found in a lot of places. Just search for the download. It is quick and easy to get. Or alternatively you can download adb tools. This should be also easy to find, and is a great thing to have many times.

Once you have done these two things (both are useful to me at times) you can go ahead and get the TWRP for your specific phone(s). This thread has some for this phone in it someplace. Maybe do a thread search?

When you have all that, you should be able to sideload a TWRP zip (ADB TOOLS) from the same folder you keep your adb tools in, you shouuld also place that TWRP zip into that same folder. Shift + right click inside that area of that folder will bring you a pop up menu, in which is written "open command window ((in this folder)) here".

inside that folder you should be able to use all your adb tools. The adb tools include the commands "adb devices" and "adb sideload". The former command lets you know when your device is attatched, by returning a number, and the latter command will sideload your TWRP zip to your phone.

Still it can be hard to flash that TWRP zip to a phone. EDIT: it is only one of 2 methods, to use the ADB tools. The 2nd method I used to get the TWRP to my phone. This is to use the Odin. If you don't have time for both then just do the Odin now. It will require the drivers for the phone, the ODIN 3.09 (download from wherever) and the TWRP .tar (md5) file. Get these things. (end of edit)

Hoping you have the driver installed so that your phone is recognized when it is plugged in the computer. If not then get them by looking up your phone and downloading USB drivers for it. Mine is currently on the fritz as I stated before.

The way I finally flashed the TWRP in my Samsung phones was finally using ODIN. Odin works with the TWRP tar file. You locate the TWRP for your samsung phone. I flashed CWM last year, and I pretty much forgot if I used ODIN or the newer "KIES" program. But I prefer Odin greatly over Kies, which installed drivers in my computer that screwed with my Microsoft Essentials. So if you can just look for the Odin 3.09. This was good for me less than 1 month ago, when I finally got TWRP installed in my phone, which has been my best friend since then., present company excluded.

So when you get the TWRP on your phone, you can install any of this stuff. Just put it there, in your folders, TWRP is so user friendly its like falling off a log. You can easily install anything with the touch interface, and it will let you search the entire contents of your phone and external sd card for the zip you want to install. In this case it's this CM 11 from [MENTION=4792108]santeri3700[/MENTION] right? so you can just find it on your external SD and hit install. You don't even have to wipe your system or anything if you already have the earlier ROM from January 9 2016.

Anything you want to flash, like zips can be very easy in the TWRP. Definitely before anything else, you go into that download mode, with your odin program, (knowing where your TWRP tar file is) and use the Odin program to put it over to the phone.

There is a lot more to it than this. For instance, the Odin program itself, is complicated if you don't know. You use the AP field (clicking the button AP will let you browse for your tar file) then after you click on your tar file it shows in the field next to the AP button This is good to have lined up and ready before putting your phone into the download mode.

You put your phone into download mode very simply with the Samsung Galaxy Core Plus, and many other Samsung phones are the same route. First turn it off. Then you hold the volume down button, and the "home" button...and after you securely have those 2 buttons pressed you turn on the phone (three buttons held in now) by holding the power button until activity starts on the screen. When the samsung logos turn on, you can release the power button, but keep the other two buttons held down until it shows the android robot. When the robot shows up, it will say "push up to enter download mode, up to restart the phone" So you will enter the download mode.

After it is in download mode connect to the computer. There is no rush here in any of these steps. Just get the phone in download mode (with plenty of battery) then get the computer ready, Odin up, allowed to "make changes to your computer" by clicking the ok button that pops up after you turn on the "Odin3 v3.09.exe" file wherever you downloaded it to (downloads perhaps?). So all this stuff ready, you hook up your computer to your phone, and the phone will say something like "starting download mode"

So then when that happens, the Odin will at the same time say "ADDED!" in a very cheerful way. You then must have your tar file selected via the "AP" button (in Odin 3.09 it is "AP", in an earlier version of Odin it was labeled something else) So there are a few more hints here in Odin, be sure the button for re partitioning is NOT CHECKED. The other 2 buttons are ok: "Auto Reboot" and "F. Reset Time". they are the only two to select.

Now that everything is lined up you hit start. your phone will flash a status bar for a moment or two, as the Odin also does the same in the left most bar at the top (green status bar). A few lines of jargon will go past in the lower left of the odin console, and it will tell you succeeded.

For me there was one more step after all this. I would suggest trying a few different things, since I only had to succeed once (or twice, another phone I did it also) I am not an old pro, but these are the things to do after that. It will auto reboot like the box in Odin said it would. So when it does this, be READY and be QUICK and hold that home button and the volume UP button this time. When it starts up again hopefully if all went well you'll see the TEAM WIN (recovery) screen because you held these 2 buttons.

If it boots into the normal phone mode I would suggest turning off and starting it by holding the volume up and the home button then holding power till it comes on (keeping the other two buttons pressed until the recovery screen appears) if it is a success you will see the TEAM WIN screen. If it is a failure you will just see the normal android recovery screen.

Which one will you see?

If not, you can do what I believe was my trick which worked for me, which was (using my kingrooted (at that time I only had kingroot and not SuperSU) phone, to download the TWRP rom manager from google play store. This should detect your root, and detect that you have a TWRP on your phone. It can somehow manage to use your TWRP and get things going. I can't definitively tell you what this can do , since it only succeeded in doing something magical for me one time. After which my phone was different again.

The best bet is to use that Odin program and download mode to put that .tar file over to your phone.

(2nd edit)

A few more additional things about this process, I did something similar to this with my Galaxy Core Plus prior to the availability of the TWRP custom recovery for the phone (which only happened in December of 2015), ...I got the ClockworkMod on my phone several months before. Which I nearly thought I had lost my phone, when it went into the little red exclamation bootloop. However, I discovered that I only needed to boot into the cwm recovery to get out of this. Which allowed me to correct my pattern. My initial concern was that I had flashed a galaxy core plus recovery to a galaxy core phone. However it turned out that I did indeed have the Galaxy Core Plus phone. So all was well. The CWM in the end allowed me to get the TWRP, so it is also a useful recovery program, if you get the chance to get it on a phone, I recommend it also.

If you do get stuck in the bootloop and fear for your phone, from the red exclamation mark (upper left) and bootloop, just go back to what I said, and hold that volume up, and the home key while it starts up. This should put you into recovery mode. And please please, make sure to flash a recovery that explicitly is designed for YOUR phone, and not some name variant of your phone . (end 2nd edit)