[Q] Is disabling lagfix a must before flashing ROMs? - Galaxy S I9000 Q&A, Help & Troubleshooting

Hi,
Currently I am running XFJP9(froyo 2.2) with supercurio's voodoo kernel with lagfix (Voodoo_stable 5.5 & ClockworkMod v2.5.1.3). Now i am planning to flash my ROM to XXJVK (2.3.3).
Now here's the question, do i need to disable the lagfix (covert back to RFS filesystem) before flashing? if its a must then please provide a link describing how to do it.
Thanks in advance.

Disabling the lagfix before changing versions is ABSOLUTELY essential. The only time you can get away with NOT disabling lagfixing when flashing ROMs is when you are going to be using the same kernel or a different version of the same kernel in the new ROM. In this case (Froyo to Gingerbread) I would disable it no matter what.
With Supercurio's kernel I believe you need to go into Recovery and select Disable System Conversion and then reboot, but I have never used that kernel so I am unsure. Perhaps you could ask in the thread for that kernel down in Android Development.

Thanks for quick reply.
Only disabling the lagfix, i mean converting back to RFS file system will work or I need to flash back to the stock kernel before flashing to JVK ROM?
Sent from my GT-I9000 using XDA App

Disable the lagfix, no need to flash back to your old stock, then follow the directions for the ROM...most require you to flash the new stock JVK ROM in order to install the bootloader, then flash whatever new JVK rom you wish as the dev suggests.
Just follow their instructions and you should be fine.

Related

[Q] Questions about Roms

Ok so I got tired of the problem with the random shut down, so I returned the phone back to amazon for a brand new one I already rooted it and unlocked it and side-loaded it already. Before I started to run custom roms on it, I want to ask you guys on here what ROMS that are "stable" as in many people have used it and gave feedback that their phone will not shut down or crash.
I also have suggestion that hopefully can be done on this forum, and that is if a mod on here or an admin can make a separate section under android development for just roms only, so that way it is not all jumbled up and mixed up with other mods, or any other development guides
Thank you for all your inputs!
If you want stability then go for assonance 5.0 with a no oc kernel (xcaliber's). It is very good with all features working.
I saw the Assonance 5.0 thread but I do not see anything about the non-oc/uv section... Is there anything extra that I need to do or just download the .zip and flash it using clockwork? Also will I get the swype keyboard and all the function that the stock have and better?
I am on assinance v 5 with xcal voodoo kendal non oc. What you have to do its flash rom, disable the lagfix, download the new kernel, flash in clockwork recovery.
I also changed the modem from jk3 to jl3 to try and improve reception and battery.
This all sounds hard, I am sure but it is as easy as what you did to root your phone. You just need to learn the steps
Sent from my SAMSUNG-SGH-I897 using XDA App
mcord, I got the rom, flashed it but how do I disable the lagfix? Why do I have to download a new kernel and changed modem from jk3 to jl3? I thought it is all included in the .zip of the rom?
xterminater07 said:
mcord, I got the rom, flashed it but how do I disable the lagfix? Why do I have to download a new kernel and changed modem from jk3 to jl3? I thought it is all included in the .zip of the rom?
Click to expand...
Click to collapse
You don't have to change the kernel or modem. I did out of preference. I like xcal with voodoo more the the pre packaged kernel. I like jl3 more then jk3. The rom is fully functioning without the changes I made, and some may not like what I have done.
If you want to disable lagfix you have to get into recovery.
Advanced lf options
Lagfix
Disable lagfix
Reboot
Select backup and restore
Done.
The stock kernel is an oc kernel and I.am not interested in over clocking
Sent from my SAMSUNG-SGH-I897 using XDA App
How do you use non-oc version with this rom? I heard several people complained about battery issue not lasting as long with the assonance?!? I'm trying the di11igaf's 3.0 rom
If you want a non oc kernel on assinance download this
http://etc.muteheadlight.net/android/I9000_reoriented_v2.2.1_bln.zip
disable current lagfix using steps listed above.
Go into clockwork recovery
Select install zip from sd
Search for this file
Select
Select
Reboot
Your phone will talk to you as this installs.
done
Sent from my SAMSUNG-SGH-I897 using XDA App

[Q] Update help 2.2.1/2.3

Hello.
I currently have a 2.2 galaxy s firmware witch i got using kies. I added the voodoo lagfix kernel to it.As i have read in the description, clockwork mod doesn't work with voodoo, so i'm stuck using odin for updating.
So, for the question: Is it safe to upgrade to 2.2.1 from Kies? And, moreover, how can I flash a costum rom like darky's or cyanogen? (i'm not sure about them).
P.S. How can I come back to stock 2.2 and delete the Voodoo kernel
Please help,
Thanks
create a folder within the Voodoo folder called "disable_lagfix" then restart the phone, it should convert back to RFS from EXT4 and return the rom to normal (ie. no lagfix applied)
once this is done, download whatever rom you want (JPY is the latest uk OFFICIAL relese i believe) or create your desired rom within Doc's Kitchen....
So, for the question: Is it safe to upgrade to 2.2.1 from Kies?
Yes otherwise it would not be offered by Samsung .
And, moreover, how can I flash a costum rom like darky's or cyanogen? (i'm not sure about them).
READ each post for instructions .
jje
itudorie said:
So, for the question: Is it safe to upgrade to 2.2.1 from Kies? And, moreover, how can I flash a costum rom like darky's or cyanogen? (i'm not sure about them).
Click to expand...
Click to collapse
You should be SURE before flashing custom ROM. Read and collect as much information from their thread. This will minimize the risk for you to repeat same problems others have had...
Cheers...

[Q] Question for regular custom rom flashers

I've tried searching the threads before I get shot!
Currently on Darky's and feel the urge to try a few other ROM's.
What is the correct way to change ROM's - flash stock ROM before flashing new custom ROM or flash new ROM from CWM, as I did with Darky.
Thanks in advance.
You can flash from rom to rom without going back to stock, Just remember to disable all ext4 conversions and all voodoo hacks, speedmod hacks, etc. Take it back to stock rfs and you should be good. unless other wise posted on the custom rom FAQ.
normally i flash darky8.0 wipe before upgrading to darky latest rom
If you get in trouble a flash back to Eclair via Odin with repartition checked and PIT file cures any problem ..
jje
I always flash back to stock Eclair before flashing another rom. It's not necessary, but it's safer.
no need to go back to stock. i never had problems going from kitchen to darky to CM7. just make sure - as said above - that all lagfix are disabled.
Cheers guys, very useful.
I don't have any lagfixes running and I'll look into disabling ext4 as I don't know how to do that.
Couple of different opinions though eek! lol
if u doesnt use lagfix, that means u dun need to disable ext4 already

[Q] JVB+Bootloaders -> JS8 Rom

Hi there,
I've got a quick question about the compatibility of JVB bootloaders, with Froyo roms.
I've flashed stock JVB+bootloaders, flashed Chainfire's kernel, then installed Faryaab's F1 rom.
However, i'm considering flashing back to Darky's JS8 rom.
Which steps do i need to take?
Something like the following, perhaps:
First put Darky's rom on my internal SD card
Flash Hardcore's Froyo kernel through ODIN
Don't let the phone reboot, pull battery
Enter recovery, flash Darky's rom?
Am i missing a few steps, perhaps?
Thanks in advance.
I would also appreciate it if some one could answer OP's question. I'm not finding GB as stable as I hoped.
The new bootloaders are compatible with froyo and even eclair thus you dont have to flash the old ones. nevertheless i would recommend to do a clean install which means you should flash any stock froyo Firmware with repartition first and then flash any Kernel with cwm in order to flash the rom you want
Sent from my GT-I9000 using XDA Premium App
Cheers, that's the answer i was hoping for .
Considering the modem, my guess is that it shouldn't be an issue to leave the JVK modem intact?
jlbloem said:
Cheers, that's the answer i was hoping for .
Considering the modem, my guess is that it shouldn't be an issue to leave the JVK modem intact?
Click to expand...
Click to collapse
no it shouldnt. but if you flash a custom rom afterwards it will be changed anyway
JVK is a good modem .
jje

Upgrade help from Froyo!

Hi
I just tried upgrading via Kies from my current old config, but it advised that my phone couldnt be upgraded... The current set-up is (as per Kies):
PDA: JPO
Phone: JPP
CSC: JPO (VOD)
From Settings, it says:
Firmware: 2.2
Baseband version: I9000XXJPP
Kernel: 2.6.32.9 [email protected] #14
Build: FROYO.XXJPO
I want to upgrade to the latest best featured stable software, custom or stock, that provides good battery life and best features. I'm not averse to custom kernels as I understand they provide cool additional features such as BLN and optimised audio etc. What would be the best latest ROM/Kernal set-up to provide what I need?
I originally flashed the above via Odin, so I'm comfortable doing that. With respect to the Speedmod lagfix I have installed, do I need to disable that? I can see a disable option to disable in CWM.
Is there a simple step by step that I can follow to get the latest software on without screwing up my phone! I've backed up some apps using Titanium Backup and have my SMS /contacts backed up to SD, so I'm ready to rock and roll...
Thanks in advance
S4chin said:
Hi
I just tried upgrading via Kies from my current old config, but it advised that my phone couldnt be upgraded... The current set-up is (as per Kies):
PDA: JPO
Phone: JPP
CSC: JPO (VOD)
From Settings, it says:
Firmware: 2.2
Baseband version: I9000XXJPP
Kernel: 2.6.32.9 [email protected] #14
Build: FROYO.XXJPO
I want to upgrade to the latest best featured stable software, custom or stock, that provides good battery life and best features. I'm not averse to custom kernels as I understand they provide cool additional features such as BLN and optimised audio etc. What would be the best latest ROM/Kernal set-up to provide what I need?
I originally flashed the above via Odin, so I'm comfortable doing that. With respect to the Speedmod lagfix I have installed, do I need to disable that? I can see a disable option to disable in CWM.
Is there a simple step by step that I can follow to get the latest software on without screwing up my phone! I've backed up some apps using Titanium Backup and have my SMS /contacts backed up to SD, so I'm ready to rock and roll...
Thanks in advance
Click to expand...
Click to collapse
Most devs include the steps you should take to install their rom on their relative threads. i would recommend Darky's rom or Milky if you want something very stable and with up to date software.
i doubt you'll have any trouble installing them.
Good luck!
by the way, you should disable any lagfixes before installing a new rom, or use the kernel cleaning tool.
Have you tried the stock firmwares from Samfirmware.com?...
Sent from my MB860 using xda premium
It's usually better to disable lagfix before flashing a new rom. You should first ensure that you're on a stock rom. If you're not, flash the odexed JPO rom to go back to stock. From there, you'd want to upgrade to a gingerbread rom. Download a gingerbread rom that has bootloaders and flash via odin. After that, you can easily flash newer roms like JVR, JVS or JVT. JVS and JVT are newer (2.3.5) but have more bugs than JVR (2.3.4).
disclaimernotice said:
It's usually better to disable lagfix before flashing a new rom. You should first ensure that you're on a stock rom. If you're not, flash the odexed JPO rom to go back to stock. From there, you'd want to upgrade to a gingerbread rom. Download a gingerbread rom that has bootloaders and flash via odin. After that, you can easily flash newer roms like JVR, JVS or JVT. JVS and JVT are newer (2.3.5) but have more bugs than JVR (2.3.4).
Click to expand...
Click to collapse
Hi
Thanks for your note. Can you clarify the process for me (I'm not great at doing this stuff!)... I think I quite like the sound of Milky's ROM/Kernal. So following your advice above...
1. Enter CWM and disable the lagfix
2. Download and flash odexed JPO. I still have the JPO file that I put on my phone via Odin (named: JPO_JPO_U_JPP - about 280mb in size). Is this the right file? If so, how do I flash it? (am guessing via Odin but in which section (PIT/PDA/PHONE/CSC) and what do I put in the rest?)
3. Download Milky's (assuming I want Milky's ROM and Kernal etc)
4. Install via Odin
5. Restore all apps etc
6.
If you can help clarify my (mis)understandings and add in any steps I have missed, it would be really helpful.
Thanks
S4chin said:
Hi
Thanks for your note. Can you clarify the process for me (I'm not great at doing this stuff!)... I think I quite like the sound of Milky's ROM/Kernal. So following your advice above...
1. Enter CWM and disable the lagfix
2. Download and flash odexed JPO. I still have the JPO file that I put on my phone via Odin (named: JPO_JPO_U_JPP - about 280mb in size). Is this the right file? If so, how do I flash it? (am guessing via Odin but in which section (PIT/PDA/PHONE/CSC) and what do I put in the rest?)
3. Download Milky's (assuming I want Milky's ROM and Kernal etc)
4. Install via Odin
5. Restore all apps etc
6.
If you can help clarify my (mis)understandings and add in any steps I have missed, it would be really helpful.
Thanks
Click to expand...
Click to collapse
2) I don't know if that's the stock one, but you can find the stock JPO from here: http://forum.xda-developers.com/showthread.php?t=846913
3) Since Milky is based on JVR, it would be safer to flash the stock JVR rom with bootloaders via odin first, before you flash milky's rom. You can find the stock JVR here:http://forum.xda-developers.com/showthread.php?t=1195335
Then, flash Milky's rom, but check to make sure there are no other special instructions for that rom.
All the other steps seem to be fine. So, basically, you flash 3 times. First time is to go back to stock JPO, second time to go to stock JVR and third time to go to modified JVR, which is Milky's rom.
Thanks all for your advice.
I took the plunge yesterday and installed Milky's without installing the stock ROM's (not the right thing to do I know!). I did disable the lagfix and reset the ROM to stock within CWM.
Anyway, luckily it all went really well (following Milky's detailed instructions with the package) and I was on the new software quickly.
The phone is set up nicely now, so I'm pleased it went so smoothly.
One question - I understand I can fiddle around with the voltage and processor speed. Is there an optimum level to maximise battery life without performance suffering?
Thanks again!
S4chin said:
Thanks all for your advice.
I took the plunge yesterday and installed Milky's without installing the stock ROM's (not the right thing to do I know!). I did disable the lagfix and reset the ROM to stock within CWM.
Anyway, luckily it all went really well (following Milky's detailed instructions with the package) and I was on the new software quickly.
The phone is set up nicely now, so I'm pleased it went so smoothly.
One question - I understand I can fiddle around with the voltage and processor speed. Is there an optimum level to maximise battery life without performance suffering?
Thanks again!
Click to expand...
Click to collapse
If you want to overclock, it's pretty safe to use apps like Tegrak Overclock to go to 1200MHz. The extra 200MHz will not really affect battery life. Also, you could check this thread out: http://forum.xda-developers.com/showthread.php?t=1250442

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