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Newest Gingerbread version for Samsung GS 2

Hi, I am currently running V.2.3.4 on my Samsung GS 2. The phone is unlocked purchased on Internet and I am with AT&T in US.
My question is how can I get 2.3.5 or higher if it's official released by Google says for UK but not for US. I don't even know Google did release it in US or not.
If not, can I still do it and where can I get it?
Any reponses would be appreciated.

Do you have the international or the AT&T version? The international version has 2.3.6 already.
You can find out which version you have in the system information. The international version is the GT-I9100.
Sent from my GT-I9100 using XDA App

TheSniperFan said:
Do you have the international or the AT&T version? The international version has 2.3.6 already.
You can find out which version you have in the system information. The international version is the GT-I9100.
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
Thanks for replying. My carrier is AT&T but I bought the phone unlocked online so it is the international version ( no AT&T name on it ) Is 2.3.6 official release or simply a beta?
Thanks

Official release. However it's not available to everyone through KIES yet. I don't know why. Maybe because Samsung handles updates crappy or because KIES is crappy.
You live in the US so I'll find a suitable update for you (English language and such). Just give me some time. I REALLY need to go sleep now. Just tell me what CSC you have asap. The best would be if you post your output of the System-Information from Android. Kernel, Baseband,....such stuff. Do you use Windows, Linux or OSX?

TheSniperFan said:
Official release. However it's not available to everyone through KIES yet. I don't know why. Maybe because Samsung handles updates crappy or because KIES is crappy.
You live in the US so I'll find a suitable update for you (English language and such). Just give me some time. I REALLY need to go sleep now. Just tell me what CSC you have asap. The best would be if you post your output of the System-Information from Android. Kernel, Baseband,....such stuff. Do you use Windows, Linux or OSX?
Click to expand...
Click to collapse
Thanks for your help. I am running Windows Xp ( SP3 ) Here's my phone system info:
Android version: 2.3.4
Baseband version: I9100XXKI1
Kernel Version: 2.6.35.7-i9100XWKI4-CL575468 [email protected]#2
Build number: GINGERBREAD.XWKI4
If the official one is 2.3.6 then how can I get it? Can I download it from some where?
I am appreciate all your help.

Samkee007 said:
Thanks for your help. I am running Windows Xp ( SP3 ) Here's my phone system info:
Android version: 2.3.4
Baseband version: I9100XXKI1
Kernel Version: 2.6.35.7-i9100XWKI4-CL575468 [email protected]#2
Build number: GINGERBREAD.XWKI4
If the official one is 2.3.6 then how can I get it? Can I download it from some where?
I am appreciate all your help.
Click to expand...
Click to collapse
2.3.4 seems like the latest version for your device (so far at least): http://forum.xda-developers.com/showthread.php?t=1075278.

Theonew said:
2.3.4 seems like the latest version for your device (so far at least): http://forum.xda-developers.com/showthread.php?t=1075278.
Click to expand...
Click to collapse
Doesn't have to be....
Sent from my GT-I9100 using XDA App

Theonew said:
2.3.4 seems like the latest version for your device (so far at least): http://forum.xda-developers.com/showthread.php?t=1075278.
Click to expand...
Click to collapse
I got the 2.3.4 from KIES yesterday but every body is talking about 2.3.6 ( may be in some countries )I would like to get the newest one of course. If Google didn't release for US market then I'll get it myself.

What is your current CSC code?
Type *#1234#

TheSniperFan said:
Doesn't have to be....
Sent from my GT-I9100 using XDA App
Click to expand...
Click to collapse
In that thread it is. And if it isn't, kies would have notified that there was a further update (so logically, it has to be).
Samkee007 said:
I got the 2.3.4 from KIES yesterday but every body is talking about 2.3.6 ( may be in some countries )I would like to get the newest one of course. If Google didn't release for US market then I'll get it myself.
Click to expand...
Click to collapse
Remember there are many variants of the Samsung Galaxy SII. Some have that update (as shown in the thread), some don't (like yours - XWKI4 (KI1)). You could interchange if you want to; See here: http://forum.xda-developers.com/showthread.php?t=1301772.

Theonew said:
In that thread it is. And if it isn't, kies would have notified that there was a further update (so logically, it has to be).
Click to expand...
Click to collapse
That's right, but if he tells me what CSC he has, he might has luck. There is a 2.3.6 firmware with multicsc and if his is amongst them, he can safely flash it, because it's english anyway.
If he has no luck, he still has options:
Wait for an update or go with MIUI or CyanogenMod and therefore 2.3.7.

Theonew said:
In that thread it is. And if it isn't, kies would have notified that there was a further update (so logically, it has to be).
Remember there are many variants of the Samsung Galaxy SII. Some have that update (as shown in the thread), some don't (like yours - XWKI4 (KI1)). You could interchange if you want to; See here: http://forum.xda-developers.com/showthread.php?t=1301772.
Click to expand...
Click to collapse
Interchange? Meaning I can still use the 2.3.6 that is suppose for other GS 2 right?

GT-I9100 is GT-I9100 so the firmware will work on your device. But depending on your CSC, you might get problems with mobile data and such.
CSC is a problem in stock-roms only. Custom-roms just work, so those are an alternative too. You can always flash back later.
Sent from my GT-I9100 using XDA App

thesniperfan said:
what is your current csc code?
Type *#1234#
Click to expand...
Click to collapse
i9100xeukh2

TheSniperFan,
So which firmware that I should get I mean the stable one of course. Can you post me the link for download if you happened to know.
Thanks
P.S. I've done the upgrade on my wife's Samsung Galaxy 3 I5800 one time ( from 2.1 to 2.2 ) The phone was not for US market as a result I could not get updates but I found the firmware & instructions online and finally got it done.

I just saw quite a bit of people in Android forum complaining about 2.3.6 causing battery drainage after the upgrade. Is it real?

Samkee007 said:
I just saw quite a bit of people in Android forum complaining about 2.3.6 causing battery drainage after the upgrade. Is it real?
Click to expand...
Click to collapse
Let me check this. I can't tell now, because I've never used 2.3.6. I used 2.3.7 right away and now my ROM is based on 4.0.1. If the battery is a problem, I'll find you a 2.3.5. one.
Sent from my GT-I9100 using XDA App
EDIT:
Indeed many people on the internet complain about that battery-life got worse. Here on xda and various different sites. I think you should go with 2.3.5 then. It's still an upgrade and people like it.
The latest one for you should be this one:
XWKJ3
Android 2.3.5
This package has: PDA: XWKJ3| Modem/phone: XXKI3| CSC: XEUKH2
Download: http://www.multiupload.com/JFWLX5M4EZ
XWKJ3 Stock Kernel: http://www.multiupload.com/JDA305KOVD
Password: [email protected]
Click to expand...
Click to collapse
Step-by-Step instructions are here:
http://forum.xda-developers.com/showpost.php?p=13712988&postcount=1
Hope this helps.

Appreciation
TheSniperFan,
Thanks for all the help. I think I better go for 2.3.5 just to be safe.
Thanks thanks again!

Firmware upgrade FAILED! HELP!
I was upgrading my GS 2 from 2.3.4 to 2.3.5 by following the links provided here some how the upgrade failed. In the mean time my GS2 STILL SHOW DOWNLOADING and said DO NOT UNPLUG THE CABLE so I waited, waited I think it was more than 12 to 15 min finally I unplugged it, the phone was still in downloading mode and didn't respond to all buttons so I removed the battery, tried back the downloading mode again then it pops up the message " Firmware upgrade encountered an issue. Please select recovery mode in Kies & try again "
But Kies said " Device not responding. To resolve the issue reboot the device " which I've tried a numerous time and nothing happen. Can some one help please!!!
Thanks
UPDATE:
I just got it fixed. While I was waiting I decided to go ahead to do whatever it takes what I did was re-do the process by opened up the Odin on PC suprisingly the downloading bar on phone & Odin both appearing while the " Firmware upgrade encountered a issue Please use KIES for recovery mode " message still there and Odin said it passed, the phone rebooted and I checked the version which is 2.3.5 I also checked all my files nothing is lost. How & why I have no idea may be some Android experts in this forum can tell me. Now everything is all good. I learned my lesson I should kept waiting before unplug or remove the cable/battery whether the process is succeded or not.

[Q] Jelly Bean Dutch Tab 2 10.1 GT-P5110 Where is it?

This might have been asked before and i am truly sorry if this thread is redundant. Did i miss anything? I see GT-P5110 JB updates all over the place except a Dutch version. As my Nexus runs JB and i am very happy with it i would like to leave the realm of ICS on the Tab2 as well.
I did read up on some threads about flashing the rom myself but i am reluctant so far. Any Dutch users out there that might give me a hint on what to do?
Thx!

baklap said:
... I see GT-P5110 JB updates all over the place except a Dutch version. As my Nexus runs JB and i am very happy with it i would like to leave the realm of ICS on the Tab2 as well...
Click to expand...
Click to collapse
Is your current firmware carrier branded? In any case you can use Odin 3.0.7 and flash "Open Europe" firmware, which can be downloaded from SamMobile.com at http://www.sammobile.com/firmware/?page=3&model=GT-P5110&pcode=0&os=1&type=3#firmware
You will have the list of the 10 latest firmwares (the first one is 4.1.2 multilingual). CLK7 is recommended (English / French)
There are several guides about using / flash with Odin. Here is one: http://androidjinn.com/install-xxclk7-android-4-1-1-jelly.html
Happy flashing..

Gregzi said:
Is your current firmware carrier branded? In any case you can use Odin 3.0.7 and flash "Open Europe" firmware, which can be downloaded from SamMobile.com at http://www.sammobile.com/firmware/?page=3&model=GT-P5110&pcode=0&os=1&type=3#firmware
You will have the list of the 10 latest firmwares (the first one is 4.1.2 multilingual). CLK7 is recommended (English / French)
There are several guides about using / flash with Odin. Here is one: http://androidjinn.com/install-xxclk7-android-4-1-1-jelly.html
Happy flashing..
Click to expand...
Click to collapse
Thank you, i will look into this! All i need is 10 hours more in a day

[Q] from Android 2.3.5 to 2.2

dear all,
i have a micromax a27 bolt.
it is 1gh processor 512 rom 210ram 2g phone.
its stock rom is Android 2.3.5
my question is can i put Android 2.2 ?
if yes how?

what a noobers question
upgrading of OS is possible but downgrade is not possible,,!

karthick mostwanted said:
upgrading of OS is possible but downgrade is not possible,,!
Click to expand...
Click to collapse
Ofcourse a downgrade is possible *Maybe do a little bit more research*
If your phone is rooted and has a Custom Recovery you could search for an android 2.2 rom for your phone, But if the phone didn't release with android 2.2 or lower it isn't possible.

Fantassy123 said:
Ofcourse a downgrade is possible *Maybe do a little bit more research*
If your phone is rooted and has a Custom Recovery you could search for an android 2.2 rom for your phone, But if the phone didn't release with android 2.2 or lower it isn't possible.
Click to expand...
Click to collapse
yes it it rooted also has cwm.
I cant understand this
Fantassy123 said:
But if the phone didn't release with android 2.2 or lower it isn't possible.
Click to expand...
Click to collapse
can you explain please...

mnms1983 said:
yes it it rooted also has cwm.
I cant understand this
can you explain please...
Click to expand...
Click to collapse
Means if the oldest version of Android the phone was released / sold with --> you can't install a older rom bacause it doesn't exist and no one would ever starting develop a android version lower then the first stock rom the phone ever had!
Why do you want to install Android 2.2???

LS.xD said:
Means if the oldest version of Android the phone was released / sold with --> you can't install a older rom bacause it doesn't exist and no one would ever starting develop a android version lower then the first stock rom the phone ever had!
Why do you want to install Android 2.2???
Click to expand...
Click to collapse
this phone released with android 2.3.5 then i think i cant put 2.2 .
this phone net speed is too slow and battery drain quickly when net browsing. that wise i thought to go to an old android version to solve above problems.

mnms1983 said:
this phone released with android 2.3.5 then i think i cant put 2.2 .
this phone net speed is too slow and battery drain quickly when net browsing. that wise i thought to go to an old android version to solve above problems.
Click to expand...
Click to collapse
Not really. 2.3.5 performance is better than 2.2 as far as i know. Phone was released with 2.2 first.
There is a custom Jellybean rom available. I'd suggest trying it and UNINSTALL all non needed crap and deactivate non needed background processes. Especially google's apps love to drain your battery. Also Jellybean support virtual memory. 256MB is pretty low, so setting up the Jellybean rom may help. You can go back to stock at any time flashing the stock firmware.
STOCK
JellyBean custom

LS.xD said:
Not really. 2.3.5 performance is better than 2.2 as far as i know. Phone was released with 2.2 first.
There is a custom Jellybean rom available. I'd suggest trying it and UNINSTALL all non needed crap and deactivate non needed background processes. Especially google's apps love to drain your battery. Also Jellybean support virtual memory. 256MB is pretty low, so setting up the Jellybean rom may help. You can go back to stock at any time flashing the stock firmware.
STOCK
JellyBean custom
Click to expand...
Click to collapse
i will try this thanks....

Fantassy123 said:
Ofcourse a downgrade is possible *Maybe do a little bit more research*
If your phone is rooted and has a Custom Recovery you could search for an android 2.2 rom for your phone, But if the phone didn't release with android 2.2 or lower it isn't possible.
Click to expand...
Click to collapse
Agree
Sent From My Samsung Galaxy Y s5360

[Q] Is SamMobile safe? (newbie quesion)

Hello
I was wondering if the Roms available on SamMobile were really safe and clean? Given they're not working FOR Samsung, where do they get those?
I'm wondering because I noticed there was a link that came with my phone originally that wasn't there when I restored a ROM I took from SamMobile.
Thank you!

Prosis said:
Hello
I was wondering if the Roms available on SamMobile were really safe and clean? Given they're not working FOR Samsung, where do they get those?
I'm wondering because I noticed there was a link that came with my phone originally that wasn't there when I restored a ROM I took from SamMobile.
Thank you!
Click to expand...
Click to collapse
I flashed many devices with odin and firmware downloaded from SamMobile.com and i never had any problems with it. The provided firmwares are not modified and seem to be 100% official versions.

No need to worry about sammobile as it is safe and clean.
It is all in one resource for Samsung stock roms. I used so many roms for different models from there and never faced any issues.
Can you please describe which link you got additional ??

vipsy6 said:
No need to worry about sammobile as it is safe and clean.
It is all in one resource for Samsung stock roms. I used so many roms for different models from there and never faced any issues.
Can you please describe which link you got additional ??
Click to expand...
Click to collapse
Nothing important really but there was a link to my carrier's mobile site and SamMobile listed the ROM with the name of my carrier. So I thought it had been modified. But maybe it's just because it's the same version as the one my carrier offers but doesn't come FROM my carrier?

Prosis said:
Hello
I was wondering if the Roms available on SamMobile were really safe and clean? Given they're not working FOR Samsung, where do they get those?
I'm wondering because I noticed there was a link that came with my phone originally that wasn't there when I restored a ROM I took from SamMobile.
Thank you!
Click to expand...
Click to collapse
I think that sammobile is a official site...
I unbricked allot devices with their firmwares!!

Newyork! said:
I think that sammobile is a official site...
I unbricked allot devices with their firmwares!!
Click to expand...
Click to collapse
No it's not official, I read somewhere they were named Samsung Firmware before they had to change to Sam Firmware at Samsung's request (before they were named SamMobile). I can't find where I read this though.

Prosis said:
No it's not official, I read somewhere they were named Samsung Firmware before they had to change to Sam Firmware at Samsung's request (before they were named SamMobile). I can't find where I read this though.
Click to expand...
Click to collapse
You're probably right, but one thing you can be sure that sammobile is a safe site....

Alright thanks everyone!

Not official, but safe. They make their money by subscription services for "premium" download privileges. Maybe ads too, but I use adblock, so I wouldn't see them.

Yes me too. But I do wonder where they get all those ROM since Samsung doesn't give the out.

Prosis said:
Yes me too. But I do wonder where they get all those ROM since Samsung doesn't give the out.
Click to expand...
Click to collapse
Most of the Stock ROM's they get from SamsungKies.
I read a interview with them a long time ago, Young ppl who make a difference!

Yes its safe,, true official firmware from samsung

Glad to see this I was wondering the same
Sent from my SM-G903W using XDA-Developers mobile app

Sammobile updates Samsung Galaxy Note 3 N9005 LTE
Hello,
Next newbie here
Could somebody senior please help me? I am wondering about official updates from Samsung for ROMs downloaded from sammobile, are they possible?
I've just installed Kitkat 4.4.2 on my beloved Note 3 after few days of using Darkera's Note 7 ROM when I'm tapping on "Update" in "Software Update" menu I get "Processing failed" message. Overall phone's responsiveness isn't that great, that's why I wanted to see if update is available.
Will appreciate any answers

eevona said:
Hello,
Next newbie here
Could somebody senior please help me? I am wondering about official updates from Samsung for ROMs downloaded from sammobile, are they possible?
I've just installed Kitkat 4.4.2 on my beloved Note 3 after few days of using Darkera's Note 7 ROM when I'm tapping on "Update" in "Software Update" menu I get "Processing failed" message. Overall phone's responsiveness isn't that great, that's why I wanted to see if update is available.
Will appreciate any answers
Click to expand...
Click to collapse
You can't do stock updates on rooted devices with custom ROMs and custom recovery.
You have to remove root, you also need to have an UNMODIFIED system partition and you need stock recovery.
If you're using a custom ROM(your note 7 ROM is a ported stock custom ROM) then that means you are rooted and probably have custom recovery which means you need to remove root and undo any system modifications that were done in the custom ROM(including any special themes and Xposed) then flash stock recovery instead of custom recovery.
Then you might be able to do the updates but the system will be looking for your device to have straight stock with no modification, if there is any modification left behind then the update won't work.
Sent from my SCH-I535 using Tapatalk

Droidriven said:
You can't do stock updates on rooted devices with custom ROMs and custom recovery.
You have to remove root, you also need to have an UNMODIFIED system partition and you need stock recovery.
If you're using a custom ROM(your note 7 ROM is a ported stock custom ROM) then that means you are rooted and probably have custom recovery which means you need to remove root and undo any system modifications that were done in the custom ROM(including any special themes and Xposed) then flash stock recovery instead of custom recovery.
Then you might be able to do the updates but the system will be looking for your device to have straight stock with no modification, if there is any modification left behind then the update won't work.
Sent from my SCH-I535 using Tapatalk
Click to expand...
Click to collapse
Hi!
Thank you for your message.
Here is the list of things I did to my poor note 3 :
- rooted
- installed Darkera's note 7 rom, custom recovery and kernel downloaded also from Darkera
- unrooted with supersu
- using Odin3 I installed kitkat 4.4.2 which I downloaded from sammobile (I was told this process gonna whipe away everything - custom rom, custom recovery and kernel)
- downloaded supersu to make sure root is gone
Because of sammobile's server maintenance happening this weekend I used kitkat file I downloaded from sammobile quite some time ago (N9005XXUEND3_N9005XEOEND2_XEO for Poland) and during flashing everything went ok. But now when I go to 'settings' and 'about device' imei, modem version, baseband version are unknown and when I try to hit 'update' I get "processing failed' message. Oh, and I'm also experiencing random reboots. I'm not sure if all this is a normal thing or perhaps I did something wrong.
I hope I didn't bore you to sleep

A few questions

Hey guys! So I have a few questions about the oneplus one here, I'm checking for a friend and I always had a nexus where matching firmware doesn't really matter much. So here they are.
1) What happens if you have the wrong firmware for a rom? Softbrick? Hardbrick? Nothing at all?
2) For a Nougat rom, what firmware do you use? Since this phone hasn't got an official firmware update for Nougat yet.
3) Is there a special recovery here on XDA that can flash all roms? (there was one for the oneplus two) or is TWRP good for all roms?
What confuses me the most about oneplus devices is how the firmware works different from most Android devices. Thanks guys!

H4X0R46 said:
Hey guys! So I have a few questions about the oneplus one here, I'm checking for a friend and I always had a nexus where matching firmware doesn't really matter much. So here they are.
1) What happens if you have the wrong firmware for a rom? Softbrick? Hardbrick? Nothing at all?
2) For a Nougat rom, what firmware do you use? Since this phone hasn't got an official firmware update for Nougat yet.
3) Is there a special recovery here on XDA that can flash all roms? (there was one for the oneplus two) or is TWRP good for all roms?
What confuses me the most about oneplus devices is how the firmware works different from most Android devices. Thanks guys!
Click to expand...
Click to collapse
1)I tried all below firmware, nothing wrong happens, I cannot identify any differences. I'm now just use the stock firmware: DI.3.0.c6
* http://forum.xda-developers.com/oneplus-one/general/firmware-modem-oneplus-one-lollipop-t3300907
** actually this post copy the exact my same post from "cyanogenmod forum"
bacon_firmware_update_2015_05-15_DI.3.0.c6-00241.zip <--- Currently bundled with latest CM13 nightly
bacon_firmware_update_2015_10-15_.4.0.1.c7-00013.zip
bacon_firmware_update_2015_12-30_.4.0.1.c7-00011.zip
bacon_firmware_h2os_update_2015_12-30_.4.0.1.c1.11-00004.zip
bacon_firmware_oxygen_update_2016_01_22_.4.0.1.c7-00013
bacon_firmware_update_2016_1-25_.4.0.1.c7-00011.zip
2)I'm now using ROM: "lineage-14.1-20170126-Okeys-bacon" from https://forum.xda-developers.com/oneplus-one/development/rom-unofficial-okeys-builds-t3534899
* it provide firmware "DI.3.0.c6" by default
3)TWRP is preferred, it is powerful and support for all ROMs

xiaoguazh said:
1)I tried all below firmware, nothing wrong happens, I cannot identify any differences. I'm now just use the stock firmware: DI.3.0.c6
* http://forum.xda-developers.com/oneplus-one/general/firmware-modem-oneplus-one-lollipop-t3300907
** actually this post copy the exact my same post from "cyanogenmod forum"
bacon_firmware_update_2015_05-15_DI.3.0.c6-00241.zip <--- Currently bundled with latest CM13 nightly
bacon_firmware_update_2015_10-15_.4.0.1.c7-00013.zip
bacon_firmware_update_2015_12-30_.4.0.1.c7-00011.zip
bacon_firmware_h2os_update_2015_12-30_.4.0.1.c1.11-00004.zip
bacon_firmware_oxygen_update_2016_01_22_.4.0.1.c7-00013
bacon_firmware_update_2016_1-25_.4.0.1.c7-00011.zip
2)I'm now using ROM: "lineage-14.1-20170126-Okeys-bacon" from https://forum.xda-developers.com/oneplus-one/development/rom-unofficial-okeys-builds-t3534899
* it provide firmware "DI.3.0.c6" by default
3)TWRP is preferred, it is powerful and support for all ROMs
Click to expand...
Click to collapse
Thanks! So it's not as important as it seems? I notice some roms here on XDA specifically say to have the newest firmware, or a certain version. The rom is still expected to boot? And what's the worst case scenario? A soft brick that can be easily fixed with TWRP or something worse? Thanks for the reply! Like I said, I'm coming from a Nexus 6 where none of this firmware stuff really applies :angel:

H4X0R46 said:
Thanks! So it's not as important as it seems? I notice some roms here on XDA specifically say to have the newest firmware, or a certain version. The rom is still expected to boot? And what's the worst case scenario? A soft brick that can be easily fixed with TWRP or something worse? Thanks for the reply! Like I said, I'm coming from a Nexus 6 where none of this firmware stuff really applies :angel:
Click to expand...
Click to collapse
Yes the rom is a still expected to boot,though,the recommended frimware is to be used so as to avoid any bugs.
However,some roms do require the recommended frimware in order to boot but I don't think even if flash any rom which needs recommended frimware will take you in any kind of brick condition as when you flash a rom on incompatible frimware you'll see error in Twrp,if so happens you just need to have recommended frimware in your storage and flash it then flash the rom again and you'll not face any errors.
Good luck!

H4X0R46 said:
Hey guys! So I have a few questions about the oneplus one here, I'm checking for a friend and I always had a nexus where matching firmware doesn't really matter much. So here they are.
1) What happens if you have the wrong firmware for a rom? Softbrick? Hardbrick? Nothing at all?
2) For a Nougat rom, what firmware do you use? Since this phone hasn't got an official firmware update for Nougat yet.
3) Is there a special recovery here on XDA that can flash all roms? (there was one for the oneplus two) or is TWRP good for all roms?
What confuses me the most about oneplus devices is how the firmware works different from most Android devices. Thanks guys!
Click to expand...
Click to collapse
1. If you are using TWRP, nothing will happens. Because when you flash a ROM, TWRP will comparing your phone model with build.prop on the targeted ROM. Because based on my experience, somehow i download LineageOS for d802 and flash it to my bacon. TWRP gives an error and didn't flash any firmware. I don't know about CWM or other recovery
2. I'm using Lineage OS. It's pretty good so far. No bug or whatever
3. TWRP is good for all ROM. i think any recovery will do