I want to build a custom ROM where do I start? - Samsung Galaxy S20 / S20+ / S20 Ultra Questions &

Hello Guys!
!!!!SORRY IN ADVANCE IF THIS IS POSTED IN THE WRONG SPOT!!!
I'm new to development but i look forward to being a part of the team!
The title is pretty self explanatory but here is some details about my situation.
USA Samsung Galaxy S20+ SM-G986U
Bootloader Unlocked
Kindle HD 8 8th Gen. (2018)
Bootloader unlocked
Alienware 17 (2014)
Ubuntu 20.04/Windows 8.1
Those are the only mobile devices that i have full root on
I'd like to start building my own ROMs for either of these.
where should i start?
programs to download?

kar0l-bask1n said:
Hello Guys!
!!!!SORRY IN ADVANCE IF THIS IS POSTED IN THE WRONG SPOT!!!
I'm new to development but i look forward to being a part of the team!
The title is pretty self explanatory but here is some details about my situation.
USA Samsung Galaxy S20+ SM-G986U
Bootloader Unlocked
Kindle HD 8 8th Gen. (2018)
Bootloader unlocked
Alienware 17 (2014)
Ubuntu 20.04/Windows 8.1
Those are the only mobile devices that i have full root on
I'd like to start building my own ROMs for either of these.
where should i start?
programs to download?
Click to expand...
Click to collapse
Start in the SuperR's Kitchen Forum first. There should be all the info you need there. There is a free version you should try first in the man Kitchen forum to give it a test run.

Misterxtc said:
Start in the SuperR's Kitchen Forum first. There should be all the info you need there. There is a free version you should try first in the man Kitchen forum to give it a test run.
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Click to collapse
Excellent thanks for the link this is exactly what I wanted!

kar0l-bask1n said:
Excellent thanks for the link this is exactly what I wanted!
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Click to collapse
No problem at all. I hope it goes good for you.

Misterxtc said:
No problem at all. I hope it goes good for you.
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I'll play around with it and post my work!

kar0l-bask1n said:
I'll play around with it and post my work!
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Click to collapse
Nice. I forgot you will need 7zip also. I use this modded version that works great for firmware files.

Related

[Q] make a flashable .zip from Odin firmware??

I have done a bit of searching using Google and the good ol' search here in XDA, but dont seem to be
making much progress on figuring out how to make a flashable .zip from an Odin firmware.
Can anyone lend me a hand in finding a tutorial or guide possibly?
Cheers!
@upndwn4par created one some time ago. Check with him.
xBeerdroiDx said:
@upndwn4par created one some time ago. Check with him.
Click to expand...
Click to collapse
cool thanks man. :3
dsixda's android kitchen!
upndwn4par said:
dsixda's android kitchen!
Click to expand...
Click to collapse
you are THE man.
can we expect you in the s4 forums sometime soon?
xBeerdroiDx said:
you are THE man.
can we expect you in the s4 forums sometime soon?
Click to expand...
Click to collapse
Not sure. If it wasn't for the locked bootloader I'd already have one. I am waiting to see if the devs can get it unlocked.

new developer, help please.

Thank you for your time.
First of all I have been rooting and unlocking many android devices and variants for years now. I have had some amazing success at it as I am pretty good at reading and following directions. I have decompiled and made some small mods to different roms, edited build.prop files. I am well versed in adb and fastboot commands as well as using odin and heimdall. i know how to record and read logcats.
That said I have a bootloader unlocked dev edition vzw s5, and would like to try my hand at fully porting a rom. Specifically from a GSM s5 to Verizon CDMA. Once I get it functional on MY device i would then like to mod it to be safestrap flashable for those that dont have dev edition verizon s5's. I should also mention i have the dev's blessing to do this and if i share it i will make sure first and foremost to give the original dev credit.
The problem is all the guides i find, even on here, seem to be outdated and dont quite work all the way. So if someone could point me to a good CURRENT (android 5.0 and up) guide for this or maybe guide me a little through the process, I would be eternally gratefull and would include whoever helps (and there donation links) in the credits if i share the finished rom.
Again thank you in advance for your time and consideration, if it weren't for the community here at xda the entire android world would be a much more different and boring place.
I am looking to bring the maverick s6 v4.5 to the Verizon s5. It is already available for every other variant
kxhan15 said:
I am looking to bring the maverick s6 v4.5 to the Verizon s5. It is already available for every other variant
Click to expand...
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It should work, and fix radio is a thing of 5 minutes
BlackMesa123 said:
It should work, and fix radio is a thing of 5 minutes
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Already done but thank you. Mods please mark as solved.
kxhan15 said:
Already done but thank you. Mods please mark as solved.
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Click to collapse
Hi there, i was wondering, a re e you gonna release that rom if you got it working? And could you share your process on converting the radio stuff? Ive been looking into doing the same with my sprint galaxy s5 (uses same technology to connect to the cell towers) but have been in the same situation as you. Thanks.
chippinganimal said:
Hi there, i was wondering, a re e you gonna release that rom if you got it working? And could you share your process on converting the radio stuff? Ive been looking into doing the same with my sprint galaxy s5 (uses same technology to connect to the cell towers) but have been in the same situation as you. Thanks.
Click to expand...
Click to collapse
Are familiar with decompiling and rebuilding apks, modding the build.prop, framework-res and rebuilding roms?
kxhan15 said:
Are familiar with decompiling and rebuilding apks, modding the build.prop, framework-res and rebuilding roms?
Click to expand...
Click to collapse
Yes to everything ecxpet for the building apks part lol. Yeah feel free to write out a how to guide on doing it, because there are probably people out there who would love that, including me! And i think there might also be someone who will create a script thatll do it automatically, Depending on what the process is.

miuiv8 rom x720 and x727

Hello everyone.
by browsing the various forums Leeco, I fall on the Roma miui v8 for Leeco the PRO3 x720 latest version of 02.11. it should also run on the x727.
apparently it is stable and all works. by cons I do not know that language is supported.
I have not tried, if someone wants to go here is the link.
sorry for my English.
http://www.manosp.com/archives/637
meuhmeuh51 said:
Hello everyone.
by browsing the various forums Leeco, I fall on the Roma miui v8 for Leeco the PRO3 x720 latest version of 02.11. it should also run on the x727.
apparently it is stable and all works. by cons I do not know that language is supported.
I have not tried, if someone wants to go here is the link.
sorry for my English.
http://www.manosp.com/archives/637
Click to expand...
Click to collapse
MIUI on the Le pro3... Interesting. If mine gets here soon I'll try it.
Sent from my 5056W using XDA-Developers mobile app
I'm looking for...
I'm waiting...
People seem to forget the rule for posting in the development thread.
'If you didn't create it yourself, it doesn't belong in the development thread'
This should be in the general section. So is the other thread that is in the dev section.
I would also warn everyone of flashing roms found in random places. They could brick your device. ROM could contain virus, spyware, etc.
Sent from my T-Mobile LG G5 using XDA Labs
@suhridkhan
sorry, I did not know!
you can move the section?
thank you
meuhmeuh51 said:
@suhridkhan
sorry, I did not know!
you can move the section?
thank you
Click to expand...
Click to collapse
Only a moderator can do that.
Sent from my T-Mobile LG G5 using XDA Labs
I don't have a baidu account... Please help me
meuhmeuh51 said:
Hello everyone.
by browsing the various forums Leeco, I fall on the Roma miui v8 for Leeco the PRO3 x720 latest version of 02.11. it should also run on the x727.
apparently it is stable and all works. by cons I do not know that language is supported.
I have not tried, if someone wants to go here is the link.
sorry for my English.
http://www.manosp.com/archives/637
Click to expand...
Click to collapse
Where did you found that link? I'm just curious, I'd like to take a look in that forum Thank you!
@unif3d3
link : http://bbs.ydss.cn/thread-703049-1-1.html
hoping that this can help you.
meuhmeuh51 said:
@unif3d3
link : http://bbs.ydss.cn/thread-703049-1-1.html
hoping that this can help you.
Click to expand...
Click to collapse
Thank you! Do you find it better than this? http://bbs.ydss.cn/thread-703999-1-1.html
I prefer the other link. it looks the same rom miui with the same bug lemax2. who have not yet received my lepro3, I can not try.
meuhmeuh51 said:
I prefer the other link. it looks the same rom miui with the same bug lemax2. who have not yet received my lepro3, I can not try.
Click to expand...
Click to collapse
What bug? Also, I can't get to sign up in that chinese website...
So, tested it a short time.
Everything's work, beside mobile network.
Can't make a call and don't have mobile Internet.
Should I make a mirror?
secXces_debaki said:
So, tested it a short time.
Everything's work, beside mobile network.
Can't make a call and don't have mobile Internet.
Should I make a mirror?
Click to expand...
Click to collapse
That's already as functional as the N based roms on my X Pure before it smashed it. Hope development continues for it on the LP3. Miui is pretty cool. Not that it needs it on this phone but Miui always gave me the best battery life (particularly standby) vs anything else even vanilla android.
unif3d3 said:
What bug? Also, I can't get to sign up in that chinese website...
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Click to collapse
ads are the same bug I on the Roma miui for lemax2
. by against the link that I put first, everything is functional from the post.
we should just try. on the bike site, there is a link to the max 2 miui with bugs.
http://www.htcmania.com/showthread.php?t=1239534
I try it... bud it is corrupt!!!... sorry
Looks like a other Dev made a more Stable Miui
secXces_debaki said:
Looks like a other Dev made a more Stable Miui
Click to expand...
Click to collapse
I saw that rom too and I wanted to download it, but I really don't know how. I signed up on that forum, but it seems that you need to install a Baidu client to download the file (which requires another signing up). The fact is that I can't sign up on Baidu.
Did you manage to download the rom? If yes, do you have a download link to share?
unif3d3 said:
I saw that rom too and I wanted to download it, but I really don't know how. I signed up on that forum, but it seems that you need to install a Baidu client to download the file (which requires another signing up). The fact is that I can't sign up on Baidu.
Did you manage to download the rom? If yes, do you have a download link to share?
Click to expand...
Click to collapse
Si,
uploaded it here
secXces_debaki said:
Si,
uploaded it here
Click to expand...
Click to collapse
Woah, thanks a ton man! Did you already give it a try? And, just to know, how did you manage to download it?

Interested in porting CM 13

Hello fellow XDA members, I recently purchased a Le Pro 3 and a Le S3 during the flash sale and would like to use Cyanogenmod on my devices. I was wondering if anyone on this forum has ever ported a ROM before as I have not, and only know about the CM porting guide and opensource.le.com for the kernel source. If anyone has any tips or would like to assist me in porting CM13 to the Pro 3 please reply to this thread or PM me. Thanks, and let's hope LeEco releases the source soon!
Love to help but this isn't my department ????. But we should probably see more support in a couple more days once they start arriving here
Just out of curiousity, what exactly had you hoped to achieve with this post? If you're interested in porting, ideally you should at least be able to build a rom (for another pre-existing device)... and then you'll have to hunt down help on the CM forums and then eventually IRC.
Talking about this on XDA is pointless.
dr4stic said:
Just out of curiousity, what exactly had you hoped to achieve with this post? If you're interested in porting, ideally you should at least be able to build a rom (for another pre-existing device)... and then you'll have to hunt down help on the CM forums and then eventually IRC.
Talking about this on XDA is pointless.
Click to expand...
Click to collapse
The purpose of my post was to see if anyone in the XDA community had experience porting a ROM to a new device, and if they'd be interested in helping me. I have read through a few guides and understanding building a ROM, but am struggling to find what I must "merge." From what I've found so far, I'll need to edit/merge the directories in /system/libs and edit the kernel?
limitlesscodes said:
The purpose of my post was to see if anyone in the XDA community had experience porting a ROM to a new device, and if they'd be interested in helping me. I have read through a few guides and understanding building a ROM, but am struggling to find what I must "merge." From what I've found so far, I'll need to edit/merge the directories in /system/libs and edit the kernel?
Click to expand...
Click to collapse
No, it's far more complicated than that. You'll need a copy of the kernel for sure, but you'll also need a device definition. You can use the op3's device as a template, it's probably the best example of an msm8996 device you can have.
You really should be checking into the CM forums. CM people are pretty uppity about not supporting things on XDA. They also don't tend to help. Even as a developer I find it difficult sometimes to get their attention. Your best bet is to go to them if you want their help. Good luck.
dr4stic said:
No, it's far more complicated than that. You'll need a copy of the kernel for sure, but you'll also need a device definition. You can use the op3's device as a template, it's probably the best example of an msm8996 device you can have.
You really should be checking into the CM forums. CM people are pretty uppity about not supporting things on XDA. They also don't tend to help. Even as a developer I find it difficult sometimes to get their attention. Your best bet is to go to them if you want their help. Good luck.
Click to expand...
Click to collapse
Yeah, I understand. I also found out that it will be about a month until LeEco officially releases all of the source.
limitlesscodes said:
Yeah, I understand. I also found out that it will be about a month until LeEco officially releases all of the source.
Click to expand...
Click to collapse
Where did you get that information from? They "accidentally" released kernel sources not too long ago and seemingly withdrew it. I got a copy of them and that's what I've been working with. I don't have a device to verify if any of it works.
dr4stic said:
Where did you get that information from? They "accidentally" released kernel sources not too long ago and seemingly withdrew it. I got a copy of them and that's what I've been working with. I don't have a device to verify if any of it works.
Click to expand...
Click to collapse
I asked on this forum. Also my S3 is coming tonight, and my Pro tomorrow. I have a copy of the Pro 3 kernel source as well but as of now don't know what to do. What have you worked on so far?
limitlesscodes said:
I asked on this forum. Also my S3 is coming tonight, and my Pro tomorrow. I have a copy of the Pro 3 kernel source as well but as of now don't know what to do. What have you worked on so far?
Click to expand...
Click to collapse
Not a lot. I've identified the CAF tag the sources are based on and have been working to separate the relevant LeEco mods from the less relevant ones. I've also been attempting to remove the leeco specific things from the drivers that i'm keeping since they're a horrible mess and CM won't be able to make use of them anyway. I've also been finding the appropriate open versions of the drivers and taking the latest ones instead.
The mods from LeEco seem to be a mess, the dmesg output I got from a user on the chinese model (the x720) had segfaults from the modifications just after boot. The logcats are so full of errors I was unable to get the user to send me a full logcat from boot.
Interestingly enough, the chinese system rom looks like it came from a Le Max2. This makes sense since it's LeEco's first msm8996 device, and the Le Pro3 is the second one. I imagine the kernel sources work across a number of the 8996's.
Can you send me the link to where you got the open drivers.
limitlesscodes said:
I asked on this forum. Also my S3 is coming tonight, and my Pro tomorrow. I have a copy of the Pro 3 kernel source as well but as of now don't know what to do. What have you worked on so far?
Click to expand...
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Please share the sources.
Sent from my LEX727 using Tapatalk
ceo.mtcl said:
Please share the sources.
Sent from my LEX727 using Tapatalk
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here
limitlesscodes said:
here
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Thank you so much!
limitlesscodes said:
here
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This is not a International version? Its USA version? Where is the International source code?
Here's a mega mirror in case the drive link goes down.
https://mega.nz/#!7Ek3HYaB!1H0WibOjwlg1P0vaaJ2qcrAAsl-PjruB9-_X1ECqfnw
Wish i could help more, but it looks like the kernel source is in there too, perhaps that means a fully functional cm13 rom that works AT LEAST as well as the stock rom. VERY EXCITE!
+1
I'm also waiting for CM13.
csyann said:
I'm also waiting for CM13.
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:good:
csyann said:
I'm also waiting for CM13.
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giogio1 said:
:good:
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Waiting for CM 14.1
http://opensource.le.com

Note 8 Pro MIUI 12

Hi guys. I have a question for you. Is there anyone that has links for the new MIUI 12 beta? I'm on the first and only Xiaomi.eu rom and I'd like to venture into something new but I can't seem to find anywhere an alternative to xiaomi.eu . Not the new beta but not even the current MIUI 11 builds. I'm looking for twrp flashable zips but can't seem to find a decent reliable site that offer it. Any help would be greatly appreciated. Thank you
t.me/MiuiSystemUpdates
zahids12345 said:
t.me/MiuiSystemUpdates
Click to expand...
Click to collapse
Thank you. Really nice library, but is it always that quiet? Asked a couple of questions and nobody answers. There aren't really any guides and seeing how delicate the Begonia is...I'm a little anxious about flashing a zip from there without any instructions.
https://play.google.com/store/apps/details?id=com.rvbanna420.MIUI11_Downloader
Catani said:
Thank you. Really nice library, but is it always that quiet? Asked a couple of questions and nobody answers. There aren't really any guides and seeing how delicate the Begonia is...I'm a little anxious about flashing a zip from there without any instructions.
Click to expand...
Click to collapse
Check here
t.me/RedmiNote8ProOfficial
zahids12345 said:
Check here
t.me/RedmiNote8ProOfficial
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Click to collapse
Yeah thanks, eventually I got to that group. I'm relatively new to Telegram groups and didn't realise that the first link you sent me was for the generic MIUI updates which was quit. The Note 8 Pro channel is way more active. Lot's of great people there willing to help.
ksc2-303 said:
https://play.google.com/store/apps/details?id=com.rvbanna420.MIUI11_Downloader
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hi guys , we need root or unlocked bootloader to use this app ?
miui 12 beta rom
hello it works with ota the rom 20.5.21 for the note 8 pro with this software ?? thank you

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