Database Info

Need steps for CM9 Build 8

I have few doubts regarding installation and operating CM9. Currently, I'm on JaggyROM 3.
Q1.
- Copy GApps and CM9 ZIPs to your SDCard
Click to expand...
Click to collapse
I need 20120429.zip for CM9 #8, right?
Q2.
- Flash CM9 zip from SDCard
- Flash GApps zip from SDCard
- DO A DATA WIPE / FACTORY RESET (otherwise your device will be stuck at boot)
Click to expand...
Click to collapse
Is this actual order of steps? Cause afaik, we have to first do the reset/wipe & then apply update. And in which order should I apply the CM9 & GApps? or any order is OK?
Q3.
- Don't restore data using Titanium Backup! they might cause FC's
- Restoring Apps + Data might cause problems and is not recommended, avoid it if possible!
Click to expand...
Click to collapse
This is THE most important question. How should I restore data?
Will it be OK if I installed ONLY APPS first with help of an installer and then used Titanium to restore data?
Can't wait to install this wonderful ROM.
Thanks.

I used this steps without a problem.
1. Download and copy rom to sdcard
2. Boot/Reboot into CWM
3. Backup your existing ROM (just in case)
4. Wipe Data/Factory Reset
5. Goto mounts/storage, mount cache, data, system
6. Format boot, cache, data, system, advanced menu dalvik
7. Install zip from sdcard, choose zip from sdcard, choose "cm-9-20121102-UNOFFICIAL-pico.zip"
8. Wait for it to install, when finished reboot, wait until on homescreen, leave to settle for afew minutes then reboot again
9. Flash gapp
Those are instructions for installing a clean stock cyanogen rom.
-from liverpool-fan
and this is the CM9#8 filename cm-9-20121004-UNOFFICIAL-pico.zip

Actually, I am confused about GApp file name.
And should I install apps in two steps? First only apps and then the app data?

BatsDroid said:
Actually, I am confused about GApp file name.
And should I install apps in two steps? First only apps and then the app data?
Click to expand...
Click to collapse
Why are you confused with gapps file name? Just install apps like normal apps

bluerain28 said:
Why are you confused with gapps file name? Just install apps like normal apps
Click to expand...
Click to collapse
because there are so many of them.

BatsDroid said:
because there are so many of them.
Click to expand...
Click to collapse
Ohhh just choose the one in the "table". :silly:

cm9 build 8
bluerain28 said:
Ohhh just choose the one in the "table". :silly:
Click to expand...
Click to collapse
I just want to know did camera works fine on cmp build 8 also video recording? on cm9 mod link2sd does not make 2nd partation. Is link2sd works fine on cm9 build 8 rom?

[Q] should I "format system" ?

hi
Ive just installed Cleanrom, and it seems slower than the stock rom i used before.
I wonder if i should have done a system format in cwm, as doing this for Slimbean on my SGS helped quite a bit...
thanks

geoslake said:
hi
Ive just installed Cleanrom, and it seems slower than the stock rom i used before.
I wonder if i should have done a system format in cwm, as doing this for Slimbean on my SGS helped quite a bit...
thanks
Click to expand...
Click to collapse
Format system is when you delete your ROM, if you want a clean install, yeah you should format system. This also depends on what ROM you want to flash. If you're going to flash stock, format system is good. I do it all the time when I flash stock

But I can also do it whatever the rom, right ? I mean if I upgrade from Cleanrom from 3.03 to 3.04, I cannot go wrong doing that ? (although they don't talk about formatting system in the guidelines).
Thank you
Format system is when you delete your ROM, if you want a clean install, yeah you should format system. This also depends on what ROM you want to flash. If you're going to flash stock, format system is good. I do it all the time when I flash stock
Click to expand...
Click to collapse

format system basically deletes all your system apps, which really isn't worth to do in an update from v3.0.3 to 3.0.4 - if it's a big update with many more apps included maybe it's worth, but otherways it's waste of time...

-angel* said:
format system basically deletes all your system apps, which really isn't worth to do in an update from v3.0.3 to 3.0.4 - if it's a big update with many more apps included maybe it's worth, but otherways it's waste of time...
Click to expand...
Click to collapse
System app? When I use twrp it said wipe system removes ROM, I guess on cwm is called format system.

Well, I guess "format system" should format system (=wipe the os i guess), not remove apps...

geoslake said:
Well, I guess "format system" should format system (=wipe the os i guess), not remove apps...
Click to expand...
Click to collapse
Hmmm why don't you use twrp. It's much better haha

Tamaskan said:
Hmmm why don't you use twrp. It's much better haha
Click to expand...
Click to collapse
Guess so, I guess its no problem to overwrite CWM with TWRP (as long as I load the right version, that is, JB as im on Cleanrom Inheritance 2.7.2)...

Format system on twrp and cwm means the same thing.
When you flash any ROM, all it does is place everything in the /system partition, and sometimes a kernel is also flashed.. this partition contains all files that make up android. All the apps that come with roms, all mods, themes, framework.. everything is here.
When /system is wiped, it deletes all these files to make way for a new rom. Most roms wipe system automatically when they get flashed anyway :good:
However, I think that cleanrom 3.0.3 is a dependancy for 3.0.4, this means that 3.0.4 requires the 3.0.3 system files to work properly. Check the cleanrom changelog or install instructions
Sent from my GT-I9100

Nothing happens, it just clears your data.

Tamaskan said:
System app? When I use twrp it said wipe system removes ROM, I guess on cwm is called format system.
Click to expand...
Click to collapse
I'm sorry, I was thinking of /system/app lol
I think the updates should rule that themselves that they delete the unnecessary things of an old version, so it's only recommended if you change your ROM or update to a ROM based on a later Android Version (4.1 to 4.2 or vice versa) or from AOSP to stock...
Otherwise it's just waste of time I think, I never used it and never had problems, so I think it's pretty good ruled in the updater scripts of the ROMs

Is this the right procedure to flash/update a ROM?

Hi guys,
I've got a Nexus 4 running PA 3.50 and I would like to update this ROM.
I've downloaded the latest PA mako 3.65 and GApps from Goo.Manager
I've done a "update.zip" (apps and data) backup with Titanium BackUp PRO and now I am going to flash the new update of the rom.
Is that right to:
- go to recovery
- wipe cache and dalvik cache
- install PA 3.65 and GApps
- flash update.zip
- wipe cache and dalvik cache
- reboot
Am I loosing anything? I mean, ROM settings, sms, whatsapp conversations and stuff like those?
Thanks in advance

Check out this video...
Remember that google and XDA search is your best friend.

Diablo67 said:
Check out this video...
Remember that google and XDA search is your best friend.
Click to expand...
Click to collapse
Thanx for the tip dude, I've watched the video and looked for guide on XDA and Google about updating a rom flashing the backups but I didn't find any...
Well...actually I've found tons of them and I'm pretty confused. That's why I decided to post here.
In the video you posted it says to do a Full Wipe, but maybe it's because he's flashing a different om, right?
Maybe I can skip the process and wiping cache instead, 'cause I'm just uploading it.
Cheers

If its just a small update,yes you can just wipe cache and dalvik,but if its a full update/rom,then you need to do a full wipe,also to make sure and check the developers notes to see what he/she suggests.

Diablo67 said:
If its just a small update,yes you can just wipe cache and dalvik,but if its a full update/rom,then you need to do a full wipe,also to make sure and check the developers notes to see what he/she suggests.
Click to expand...
Click to collapse
Thanks dude, you're really helping me out!
May I ask another question?
What about restoring data? I mean, if I backup with Titanium PRO, creating the update.zip file (containing both apps and data files) are there possibilities to get problems on system datas?
'cause I read that system app backups can create conflicts. Is that right?

buddha.afgano said:
Thanks dude, you're really helping me out!
May I ask another question?
What about restoring data? I mean, if I backup with Titanium PRO, creating the update.zip file (containing both apps and data files) are there possibilities to get problems on system datas?
'cause I read that system app backups can create conflicts. Is that right?
Click to expand...
Click to collapse
It's possible but unlikely when flashing only a small update.
Backup and only the app data and download the apps again to be safe.
Sent from my GT-I9100 using xda app-developers app

H3llwar said:
It's possible but unlikely when flashing only a small update.
Backup and only the app data and download the apps again to be safe.
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
Oks, so...I am downloading the latest GApps and then do the procedure.
- Wiping cache and dalvik cache
- Wiping factory reset
- Flashing the update of the PA 3+ ROM
- Flashing the GApps
- Rebooting
- Setting up the phone as I did the first time I've booted it
- Installing Titanium BackUp PRO from the Market
- Restoring App+Data ONLY for the green and white colored ones
- Having fun with the updated ROM
So, this is the shortest/best process to flash an update of an existing rom...:good:
I let you know guys.

How did you make out. I use team win it makes it so simple also usually on fire page is where the developer of the rom shows you what to do.
Sent from my SPH-L710 using xda premium

Nikprelaj said:
How did you make out. I use team win it makes it so simple also usually on fire page is where the developer of the rom shows you what to do.
Sent from my SPH-L710 using xda premium
Click to expand...
Click to collapse
Everything went great!
Well actually at the first flashing of some GApps GooManager downloaded me I got errors just after the boot, but I went to recovery and flashed another GApps I'd downloaded using PA Updater.
So, with Titanium BackUp I simply restored everything...and now my phone has the brand new ROM, but everything with every setting as it was before! :good:
Cheers!

[MOD] Super Wipe for Samsung Galaxy S5 G900F G900T G900H G900P

Hello friends,
This mod is highly recommended when you switch roms/versions.
When you install a rom, all junk such as temp files, useless items, are located on the internal storage.
So what exactly this mod does?
It wipes your Cache partition
It wipes your System partition
It wipes your Data partition - Data partition includes your internal storage!(internel storage is located in data/media/)
Click to expand...
Click to collapse
Important notes:
Make sure you have backuped your images, songs, etc. from your internal storage becuase it will be deleted!
Make sure you have external SD card with the rom you wish to install because you will have nothing installed on your device.
Click to expand...
Click to collapse
I'm not responsible for any damage caused by using this mod.
This is for G900F/P/T/H Only!!!!!!!
So, how do I install it?
Backup everything you want to your computer.
Copy to your External SD Card the following items:
- ROM
- Super WIpe Script
Reboot into recovery
Install the script.
After it finishes, it will reboot your device into recovery again. If not and it stucks on Samsung logo, reboot to recovery and reflash the script.
Install your ROM
Enjoy
Click to expand...
Click to collapse
Downloads:
Direct link:
G900F & G900P:
http://d-h.st/3u3
G900H:
http://d-h.st/NHS
G900T:
http://d-h.st/yBx
Click to expand...
Click to collapse
Credits:
mike1986. for his base script for Note II
Click to expand...
Click to collapse
Enjoy!​

Thanks, any chance for a de-bloat flashable script please
Sent from my SM-G900F using XDA Premium 4 mobile app

Thanks for the script. Nicely done. I remember my first steps in android land, where
this script helped me a lot. It's true. You can do it yourself. If you know what you're
doing... And not everyone knows...

eloko said:
Nice..
Why have you if I can do it myself?
Click to expand...
Click to collapse
To make things easier for you and for a lot of people more. So you can accomplish that without doubts, and even just in "one click". You could also make roms and kernels by yourself.. don't you think so? But, again, there's other people doing it for you.. for free.

script not work on my g900h

got stuck with TWRP logo after flashing wipe script
going to odin now for stock firmware install
i have g900f
had twrp 2.7.1.0 installed
back to scratch

Do you really need this when you can wipe these things trough custom recovery? What is th difference?

Dirtyzecret said:
Do you really need this when you can wipe these things trough custom recovery? What is th difference?
Click to expand...
Click to collapse
Convenience.

Why do some ROM instructions specifically say NOT to super wipe before flashing?

AuGmENTor said:
Why do some ROM instructions specifically say NOT to super wipe before flashing?
Click to expand...
Click to collapse
I don't know about them, but I always recommend in that and I always do that before I flash my rom.
Sent from my SM-G900F boosted by PhoeniX ROM

What a nice MOD.
Thanks

tamirda said:
I'm not responsible for any damage caused by using this mod.
This is for G900F/P/T/H Only!!!!!!!
​
Click to expand...
Click to collapse
Is there a version for the G900i?
thanks​

@tamirda
I think you should remove its support for 900H coz Philz recovery or any other recovery does not support external SD card read / write yet.
If used your script on 900H the user will have no other option left but to install stock rom from ODIN.

could not use from stock recovery on rooted 900p.
Finding update package...
Opening update package...
Verifying update package...
E:footer is wrong
E:signature verification failed
Installation aborted.

Hi,
Is there a version for the G900i
Thanks

Hi,
how to root it on this mod, i have g900p modifier to g900f ..... i ask what the root file i chose to root it g900f or g900p

Will I be able to install stock roms after installing this?

Can i install roms on System 1, who and how? pls help :(

Can i install roms on System 1, who and how? pls help, i dont want to break my phone, i 've LiquidSmooth but on System 3, i need more space and the only way its installing on system 1..
Who other roms can i install on system 1, and who are requirement? thx for your help :good::cyclops:

Yes, you can. In fact, I am using just System 1 (AOSB) as my daily ROM.
I don't know if this is required, but I'm always doing the following:
1. Format /system, /data, /cache
2. Wipe System, Cache, Dalvik Cache
3. Install ROM
4. Install GApps
I never had any problems since.
Goodluck mate!
Cheers,
Rae

I have never used any other system other than system 1 as daily driver..i don't know y ppl are so scared to flash..same time two years back we didn't even have a recovery on boot and still used to flash roms courtesy rdavisct, alteredlikeness, jimbridgman n co..this whole concept of multiple systems has made things more complicated than before it seems
Sent from my MB865 running CaRbOn 4.4.3 source built by dmroeder!!
---------- Post added at 08:03 PM ---------- Previous post was at 08:00 PM ----------
devilhunter47 said:
I have never used any other system other than system 1 as daily driver..i don't know y ppl are so scared to flash..same time two years back we didn't even have a recovery on boot and still used to flash roms courtesy rdavisct, alteredlikeness, jimbridgman n co..this whole concept of multiple systems has made things more complicated than before it seems
Sent from my MB865 running CaRbOn 4.4.3 source built by dmroeder!!
Click to expand...
Click to collapse
To the steps mentioned above
Wipe battery stats
After installation go to system keeper option
Install bmm to main system
Reboot
Safer this way
Sent from my MB865 using Tapatalk 2

Raeshabu said:
Yes, you can. In fact, I am using just System 1 (AOSB) as my daily ROM.
I don't know if this is required, but I'm always doing the following:
1. Format /system, /data, /cache
2. Wipe System, Cache, Dalvik Cache
3. Install ROM
4. Install GApps
I never had any problems since.
Goodluck mate!
Cheers,
Rae
Click to expand...
Click to collapse
Thaankss..! bro im gonna try it now..! i did a back up of stock 4.0.4

devilhunter47 said:
I have never used any other system other than system 1 as daily driver..i don't know y ppl are so scared to flash..same time two years back we didn't even have a recovery on boot and still used to flash roms courtesy rdavisct, alteredlikeness, jimbridgman n co..this whole concept of multiple systems has made things more complicated than before it seems
Sent from my MB865 running CaRbOn 4.4.3 source built by dmroeder!!
---------- Post added at 08:03 PM ---------- Previous post was at 08:00 PM ----------
To the steps mentioned above
Wipe battery stats
After installation go to system keeper option
Install bmm to main system
Reboot
Safer this way
Sent from my MB865 using Tapatalk 2
Click to expand...
Click to collapse
ohhh i'm really thankful , i was nervous but with this steps i'm sure of wait i'm going to do..

saga02 said:
Thaankss..! bro im gonna try it now..! i did a back up of stock 4.0.4
Click to expand...
Click to collapse
Good luck mate! :good:
@devilhunter47
Thanks for the additional info.
Anyways, I never install BMM after flashing ROMs because it auto-installs after you press back from Install from Zip. Or maybe we just have different experiences regarding this.
Thank you again! :highfive: :good:

Raeshabu said:
Good luck mate! :good:
@devilhunter47
Thanks for the additional info.
Anyways, I never install BMM after flashing ROMs because it auto-installs after you press back from Install from Zip. Or maybe we just have different experiences regarding this.
Thank you again! :highfive: :good:
Click to expand...
Click to collapse
Sometimes it fails to and i had to fxz
Sent from my MB865 using Tapatalk 2

171
devilhunter47 said:
Sometimes it fails to and i had to fxz
Sent from my MB865 using Tapatalk 2
Click to expand...
Click to collapse
guys i've a problem, when the installations finish i did "system keeper option", and then show me a mistake, saying "BBM will not start after reboot", and now the phone dont show me BBM and only restart and restart :/ i dont know what to do now, because i can enter to bbm and fix this :S.. I can not even go to android, is happening and I did wrong? : ( And how to fix this please help ..!

Raeshabu said:
Good luck mate! :good:
@devilhunter47
Thanks for the additional info.
Anyways, I never install BMM after flashing ROMs because it auto-installs after you press back from Install from Zip. Or maybe we just have different experiences regarding this.
Thank you again! :highfive: :good:
Click to expand...
Click to collapse
Heelpp..! BMM not appear, and the phone stayed restarting does nothing but nothing out of the motorola logo screen goes black for a minute and not start, should show BBM but no longer does, and prior to the reboot when installation is complete and I gave keeper system option "Install bmm to main system" not only told me BBM started after reboot and so did not know what to do now ..: S can not access the system 3 is where I have q my other system: (help please

saga02 said:
Heelpp..! BMM not appear, and the phone stayed restarting does nothing but nothing out of the motorola logo screen goes black for a minute and not start, should show BBM but no longer does, and prior to the reboot when installation is complete and I gave keeper system option "Install bmm to main system" not only told me BBM started after reboot and so did not know what to do now ..: S can not access the system 3 is where I have q my other system: (help please
Click to expand...
Click to collapse
Sorry to hear that.
So, are you saying that after you installed a ROM in System 1, you force-installed BMM again through System Keeper?
I think you need to FXZ back to stock ICS, then root, then install BMM from the market again.
I think I had the same experience back when I first got this phone and was still experimenting on stuffs.
Anyways, do you know how to FXZ back to stock ICS? There's a guide on how to do that here:
forum.xda-developers.com/showthread.php?t=1937112
Click to expand...
Click to collapse
You SHOULD follow every step mentioned on the thread, and also download the correct FXZ for your phone.
Or you could check my post here:
forum.xda-developers.com/showthread.php?p=53305693#post53305693
Click to expand...
Click to collapse
Just ignore the part where I insist you should download the AT&T FXZ for your phone. That part is for my phone only.

Raeshabu said:
Sorry to hear that.
So, are you saying that after you installed a ROM in System 1, you force-installed BMM again through System Keeper?
I think you need to FXZ back to stock ICS, then root, then install BMM from the market again.
I think I had the same experience back when I first got this phone and was still experimenting on stuffs.
Anyways, do you know how to FXZ back to stock ICS? There's a guide on how to do that here:
You SHOULD follow every step mentioned on the thread, and also download the correct FXZ for your phone.
Or you could check my post here:
Just ignore the part where I insist you should download the AT&T FXZ for your phone. That part is for my phone only.
Click to expand...
Click to collapse
Ready brother could fix all that I did just now was able to install in system 1 and so far everything is fine, the problem was the gapps and they made the bootlooping, I am LiquidSmooth 3.1 (4.4.3) that I can recommend another rom this stable and fast ... thank you very much for your help really'm super grateful to you ..

saga02 said:
Ready brother could fix all that I did just now was able to install in system 1 and so far everything is fine, the problem was the gapps and they made the bootlooping, I am LiquidSmooth 3.1 (4.4.3) that I can recommend another rom this stable and fast ... thank you very much for your help really'm super grateful to you ..
Click to expand...
Click to collapse
Hey, I'm glad that you fixed your phone. :highfive:
Cheers,
Rae

saga02 said:
Can i install roms on System 1, who and how? pls help, i dont want to break my phone, i 've LiquidSmooth but on System 3, i need more space and the only way its installing on system 1..
Who other roms can i install on system 1, and who are requirement? thx for your help :good::cyclops:
Click to expand...
Click to collapse
Dude you can flash ROM's on System 1 but please be careful as it will delete all other data on the other systems.
One more thing if your using altreds CM 11 use the BaNkS minimal gapps, It's not a problem to flash on the system 1, the thing is a failed flash can sometimes lead to you needing a FXZ, so just be careful on which ROM your flashing. :good:

I have little bit confusion. Please guide if these steps are correct:
1. Using BMM, format system 1 partition, data, cache.
2. Clean/wipe data, cache, battery, dalvik
3. Install ROM and GAPPs in system 1
4. system keeper > keep/install BMM
Are these steps correct?
Another question is if I want to install only one ROM in system 1 and want to use all available space for this setup then how to setup the partitions with maximum available space? Or I don't need to setup partitions?

Jack Sparrow xda said:
I have little bit confusion. Please guide if these steps are correct:
1. Using BMM, format system 1 partition, data, cache.
2. Clean/wipe data, cache, battery, dalvik
3. Install ROM and GAPPs in system 1
4. system keeper > keep/install BMM
Are these steps correct?
Another question is if I want to install only one ROM in system 1 and want to use all available space for this setup then how to setup the partitions with maximum available space? Or I don't need to setup partitions?
Click to expand...
Click to collapse
No need to set partition sizes on system 1, that's solely for multi-booting ROMs on systems 3-6. Everything else is good though.

1BadWolf said:
No need to set partition sizes on system 1, that's solely for multi-booting ROMs on systems 3-6. Everything else is good though.
Click to expand...
Click to collapse
Thanks for the info, that was really helpful
But one confusion, I use BMM for flashing ROMs. And in case of BMM, we have to set partitions for system, data and cache. How to do that partitioning step in case if we want to flash ROM in the system 1 ? Won't we have to specify the sizes for all of those partitions?
Another question is, how to fully clean up the system 1 and free up whole ROM space before starting system 1 setup? I mean can I clean everything which came from factory before flashing on the system one to get as big as possible size of internal ROM for the system 1 setup? How much space we can get by doing that? Right now it shows around 2 GB available for user (apps and data) in the 4GB ROM of the Atrix 2, how much would it show in case of custom ROM flashing by freeing up whole space?

Jack Sparrow xda said:
Thanks for the info, that was really helpful
But one confusion, I use BMM for flashing ROMs. And in case of BMM, we have to set partitions for system, data and cache. How to do that partitioning step in case if we want to flash ROM in the system 1 ? Won't we have to specify the sizes for all of those partitions?
Another question is, how to fully clean up the system 1 and free up whole ROM space before starting system 1 setup? I mean can I clean everything which came from factory before flashing on the system one to get as big as possible size of internal ROM for the system 1 setup? How much space we can get by doing that? Right now it shows around 2 GB available for user (apps and data) in the 4GB ROM of the Atrix 2, how much would it show in case of custom ROM flashing by freeing up whole space?
Click to expand...
Click to collapse
System 1 gets partitioned by flashing the FXZ so it's not necessary to do it with BMM. The best way to clean up system for flashing is to flash the FXZ first, then root and install BMM, etc. You can also use BMM to format system, data, cache and dalvik cache if you haven't created partitions for other systems. The only reason you will ever need to create partitions with BMM is to flash on systems 3-6.

1BadWolf said:
System 1 gets partitioned by flashing the FXZ so it's not necessary to do it with BMM. The best way to clean up system for flashing is to flash the FXZ first, then root and install BMM, etc. You can also use BMM to format system, data, cache and dalvik cache if you haven't created partitions for other systems. The only reason you will ever need to create partitions with BMM is to flash on systems 3-6.
Click to expand...
Click to collapse
Oh, I thought BMM will do it on sys 1 as well. I used sys 3 & 4 just to try out various ROMs without risking the stock system so that I can know which ROM suites me and later I can cleanup the whole system and put that ROM of my liking in the main system.
I am not familiar with FXZ method and it seems more complicated to me. isn't there any way to flash ROM on sys 1 and deleting the other partitions?
I am noob in this flashing thing and its been just 10-12 days since I started it up. the bmm method looked easy to me and I would prefer it if its possible to use for this purpose.
Sent from my MB865 using Tapatalk

Jack Sparrow xda said:
Oh, I thought BMM will do it on sys 1 as well. I used sys 3 & 4 just to try out various ROMs without risking the stock system so that I can know which ROM suites me and later I can cleanup the whole system and put that ROM of my liking in the main system.
I am not familiar with FXZ method and it seems more complicated to me. isn't there any way to flash ROM on sys 1 and deleting the other partitions?
I am noob in this flashing thing and its been just 10-12 days since I started it up. the bmm method looked easy to me and I would prefer it if its possible to use for this purpose.
Sent from my MB865 using Tapatalk
Click to expand...
Click to collapse
Flashing the FXZ is actually pretty simple. The main thing to know is which FXZ is the correct one for your phone. (Also it's a really good idea to find THAT out BEFORE you need it.) BMM is far more complicated and confusing IMHO.
Anyway, it's still possible to do a clean flash via BMM if that's what you're more comfortable with, though, so no worries. Just do a factory reset, which will format data, cache, and dalvik. Since that formats the data partition you will lose everything on any other existing systems. (though it may not always be necessary I normally format the system as well. DO NOT reboot at this point or you'll have no choice but to FXZ.) Then you just flash the zip plus gapps and whatever other mods you want. Personally I like to reboot between flashing each zip. In other words, I flash the ROM then reboot. Then gapps and reboot, etc. No repartitioning is necessary for flashing on system 1 and might actually be detrimental so just skip that.

Thanks a lot @1BadWolf, your post clears all doubts in my mind
1BadWolf said:
No repartitioning is necessary for flashing on system 1 and might actually be detrimental so just skip that.
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Thanks for letting me know about no need of partitioning sys 1. If I wouldn't have been in this discussion with you, I would have ended up creating partitions on system 1 as well like what I have learnt to do on other systems and there would have been a thread by me on getting stuck in bootloop, you saved me from that.
To be bit on more safer side, let me put what I have understood so far:
1. Boot in BMM.
2. Factory reset on system one. (I have two other custom ROMs on system 3 and 4. will it also clear all the other ROMs installed on other systems also?
3. Format partitions on system one.
4. Clear system, data cache etc
5. Install ROM and GApps on system 1
6. Keep BMM in main system
7. Reboot and done
Is there anything broken or wrong in that chain?
One more query, can I keep continue installing ROMs on other systems like what I am doing right now in case of retaining stock ROM?