Database Develop

[Q] Should I downgrade my Bell JK4 2.2 to 2.1 before it bricks?

Hey all you fellow sad bunch of Bell Galaxy owners,
I did the bell upgrade via kies, did factory reset, cache wipe, format sd card and so far my phone is running just dandy on the new froyo.
I did it because it was all official and now I see that they pulled the update! And looking at all these threads it looks like this will brick my phone in a matter of days simply because of bad software, not hardware.
Should I try to downgrade before I'm doomed? And where do I find the old bell files to do this odin thing?
Any advice/curious musings would be greatly appreciated.

Yes.
I had mine on jk4 for a day and then changed firmwares. No issues so far.
I'm running jpu now.

Thanks! Hey it's not clear to me as to what is the best route to do the downgrade for the i9000m, and which roms are compatible with this bell version, can I install any rom and be fine?
I have the idea that the i9000m is quite different from the other galaxy s variants.
Rom manager doesn't work on this phone so I guess my only option is odin?

From what I understand, failure is mainly caused by a data corruption on the SDCard when changing firmware. So I'd stay away from frecquent firmware change for now...the more you do it, the higher the risk is.
JK4 is still official, so if you get issue with it, you're pretty much covered by the waranty.

I did mine and its been fine no problems
Sent from my GT-I9000M using XDA App

Dusante said:
Thanks! Hey it's not clear to me as to what is the best route to do the downgrade for the i9000m, and which roms are compatible with this bell version, can I install any rom and be fine?
I have the idea that the i9000m is quite different from the other galaxy s variants.
Rom manager doesn't work on this phone so I guess my only option is odin?
Click to expand...
Click to collapse
Rom Manager won't work on JK4 stock because it installed 3e recovery which checks that update.zip files are signed before running them. If you choose to stick with JK4 and want to pursue Rom Manager, your best bet is probably using a kernel which has Rom Manager built in. For example, I flashed SpeedMod Kernel k10j on one of my phones (check the i9000 dev forums).
If you choose to "downgrade", use Odin. JK3 (2.2) and JH2 (2.1) are Bell specific firmwares. Alternatively, using the reg hack solution might work (I've never used it myself so can't offer help). Let us know if you need help with Odin or flashing an earlier firmware.

How do I downgrade my Bell Vibrant? I have 2 Bell Vibrants.. 1 already got the SDcard error 3 days after updating to 2.2.. My second one is still working (2.2) and I want to save it! Please show me how to safely downgrade back to 2.1

Bricks were happening before Froyo 2.2 (JK4) came out of the official channel (Kies).
Nobody can say for certain that it has something to do with JK4 or with an internal hardware issue that is a ticking time bomb. If your phone is working fine on 2.2 (like mine), enjoy it, otherwise send it back to Bell for repair when it dies.

bimmerboii said:
How do I downgrade my Bell Vibrant? I have 2 Bell Vibrants.. 1 already got the SDcard error 3 days after updating to 2.2.. My second one is still working (2.2) and I want to save it! Please show me how to safely downgrade back to 2.1
Click to expand...
Click to collapse
1) Verify you have Recovery and Download mode still working (3 button combo).
2) Remove any lag fixes if you have applied them and download the UGJH2 PDA from Samsung firmware website.
3) Start Odin and put the JH2 firmware (tar file) in the PDA section.
4) Put the 512 pit file that came with Odin install in the PIT section.
5) Click Re-partition.
6) Stop Kies if running and connect phone to USB cable.
7) Ensure that Odin recognizes the phone in the ID:COM section.
8) Click Re-Partition and hit Start.
9) Pray that it works, wait for it to reboot and wait for it to startup, it may take longer than normal for the first boot.
I'm not responsible if it does not work out for you.... Personally, if you have it working on JK4, I would leave it well enough alone.

Thanks for giving the step by step guide.. I am experiencing some FC's on JK4.. I think it's on it's way to getting bricked.. I wana put back JH2 as soon as possible

I went back to JK3 as I've had no problems with it and it's given me the best battery life. Its currently sitting at 84% remaining battery after 12 hours use.

xedd said:
1) Verify you have Recovery and Download mode still working (3 button combo).
2) Remove any lag fixes if you have applied them and download the UGJH2 PDA from Samsung firmware website.
3) Start Odin and put the JH2 firmware (tar file) in the PDA section.
4) Put the 512 pit file that came with Odin install in the PIT section.
5) Click Re-partition.
6) Stop Kies if running and connect phone to USB cable.
7) Ensure that Odin recognizes the phone in the ID:COM section.
8) Click Re-Partition and hit Start.
9) Pray that it works, wait for it to reboot and wait for it to startup, it may take longer than normal for the first boot.
I'm not responsible if it does not work out for you.... Personally, if you have it working on JK4, I would leave it well enough alone.
Click to expand...
Click to collapse
is this likely the best way to get an i9000m that has been upgraded to 2.2 to have e2 recovery? Also where would i download the JH2 rom file?

AdamArchibald said:
is this likely the best way to get an i9000m that has been upgraded to 2.2 to have e2 recovery? Also where would i download the JH2 rom file?
Click to expand...
Click to collapse
its all here http://forum.xda-developers.com/showpost.php?p=9776920&postcount=26
successfully downgraded to 2.1 will now upgrade to 2.2 JL2

I've been running JK4 since it got realeased and so far so good. Never had any probleme related to firmware. My phose is a new one got after my first one died using JPC so I don't think it's related to firmware but realy hardware.
Sent from my GT-I9000M using XDA App

[Q] Bell i9000m and Ginger bootloaders - safe?

Hey,
I skimmed through the forums and saw various posts about people asking what ROMS were safe for the i9000m but haven't seen anything about sbl.bin
As most of you probably know, the i9000m was plagued with sd card corruptions pre JL2. Then, that miracle FW introduced a new sbl.bin that solved some stuff and the sd card corruption went WAY down. Now, with the arrival of Gingerbread and new bootloaders, i was wondering if it was safe to use these new bootloaders on our i9000m devices and still benefit from that miracle cure that the JL2 bootloaders provided. Its pretty much the only concern i have thats stopping me from going to Gingerbread.
Thanks

BottleB said:
Hey,
I skimmed through the forums and saw various posts about people asking what ROMS were safe for the i9000m but haven't seen anything about sbl.bin
As most of you probably know, the i9000m was plagued with sd card corruptions pre JL2. Then, that miracle FW introduced a new sbl.bin that solved some stuff and the sd card corruption went WAY down. Now, with the arrival of Gingerbread and new bootloaders, i was wondering if it was safe to use these new bootloaders on our i9000m devices and still benefit from that miracle cure that the JL2 bootloaders provided. Its pretty much the only concern i have thats stopping me from going to Gingerbread.
Thanks
Click to expand...
Click to collapse
I'd also second this question but add on to it the following:
boot.bin
sbl.bin
Both safe?
In addition:
Can we go back to eclair/froyo if we want, in order to reflash official from kies in Canada?
Can we use our own CSC?
Does this support the 850 band, or do I need to flash the KC1 modem?
Will the phone die?
We thank you all for your time

1. yes
2. no
3. yes if you use the method here: http://forum.xda-developers.com/showpost.php?p=12156313&postcount=438 or just keep using JL2 or KC1 modem
4. mine hasn't yet, been on gingerbread for about a week or so now

moved to gingerbread and can't see why you would want to go back to an earlier firmware.
custom rom and especially a custom kernel transform the phone completely: much faster, much better functionality and better battery life
you can still connect to kies, but why? odin and cwm provide a much better means to upgrade and change firmware and open source development is much better than anything Bell will ship
things to realize: (1) the sgs is incredibly resilient and robust, most "bricks" are not bricks at all but recoverable with download mode and reflash (2) there's lots of expertise to see you through every situation and every rom chef and kernel developer has its loyal fan base, so try for yourself and find the combination that works best for you

do we need to update the bootloader if we come from KC1 and we want to upgrade to JVH?

not to use kc1 modem with JVK rom no: but if you are coming from 2.2 froyo rom to 2.3.3 gingerbread JVK rom, you need bootloaders to move from the 2.2 rom to the 2.3 rom
the sequence is:
1.change rom from 2.2 to 2.3 stock JVK with GB bootloaders (see http://forum.xda-developers.com/showthread.php?t=1047924)
2. change stock JVK rom to custom JVK rom (deodexed, zipaligned and rooted) using cwm sd card zip method
3. if desired, flash compatible performance JVK kernel (using odin or cwm) note: many roms include kernel, check features list -- this step is only to replace the included kernel that got you rooted or to swap it out for one that has different performance features (speed, battery life etc)
4. activate 850 mode in JVK modem or reinstall KC1 modem (flash in odin or use cwm sd card zip).
5. go into cwm recovery, perform backup and then add custom modded theme if desired -- do the backup of the full functioning system before doing theme changes, that way if anything goes wrong you are starting from the completed install and don't have to repeat everything!
5. load titanium backup and restore apps: use market to update and then set up your launcher
6. do another backup!
Seems more complicated than it is. Along the way if anything hangs step 1 is always pull the battery and reboot. If that doesn't do the trick, step 2 is pull the battery and use the 3 button control to go into recovery mode, reflash and reboot, and if that doesn't work, use the 3 button control to go into download mode and reflash the part that hung, and if that fails, go into download, connect to odin and start at the beginning!
shamelessly stolen from all the good guides that dot the xda landscape and a surfeit of trial and error!

Here is what I did. At first I was on KC1 (updated trough kies). Later I flashed a 2.2.1 JS8 based ROM, without modem or boot loader (so these two were still KC1)
I wanted to try gingerbread. So I flashed the gingerbread starter through heimdall (boot loader and kernel)
I booted in recovery and installed my custom JVH ROM (took the rooted deodexed JVH ROM, removed a few stuff, edited gps.conf for north-america and replaced Swype with a fr-CA enabled-one), upgrading the kernel (to default JVH) but not the modem.
So my modem is still KC1 (850 MHz working out of the box) and JVH works fine.

zorxd said:
Here is what I did. At first I was on KC1 (updated trough kies). Later I flashed a 2.2.1 JS8 based ROM, without modem or boot loader (so these two were still KC1)
I wanted to try gingerbread. So I flashed the gingerbread starter through heimdall (boot loader and kernel)
I booted in recovery and installed my custom JVH ROM (took the rooted deodexed JVH ROM, removed a few stuff, edited gps.conf for north-america and replaced Swype with a fr-CA enabled-one), upgrading the kernel (to default JVH) but not the modem.
So my modem is still KC1 (850 MHz working out of the box) and JVH works fine.
Click to expand...
Click to collapse
You can use this procedure (as stated before) and use the latest modem with 850hz support
http://forum.xda-developers.com/showpost.php?p=12156313&postcount=438
I got JVH running with a full flash and 850hz

What exactly does the 850 band give us? I've never switched anything on or off in regards to bands/modem and my phone has always given me a signal and a data connection. What exactly do you get when you enable the 850 band? Also how do you know if it is enabled or not?

Some places in Canada have poor or no 1900 MHz coverage. In this case you will want 850 MHz.
I noticed my phone used 850 MHz mostly indoor and in rural areas. To check you need to go in service mode (I don't remember the code by heart but it starts with #*#*)
@t1mman
Thanks I know but I think it's easier to say on KC1 as I have no problems with this modem.

no problems
been on jvb for a week with zero problems, this phone was previously sent in for repair prior to 2.2 jl2 release... so things seem to be good... i flashed ugkc1 modem for 850 band

[Q] KG3 and JVR question.

I have an I9000M from Bell (Running on Telus) unlocked but not rooted.
I have had non-existent GPS since Kies updated me to KG3. I tried a couple of things but nothing helps.
For the hell of it, I flashed JVR (stock) that I got from samfirmware.com. The GPS was almost instant, showing 9 sats in about 10 seconds.
There is a Swisscom screen that appears when booting, so obviously this ROM is the Swiss version. Is there a problem with me using this Swiss stock ROM on Telus?
Can I go back to KG3 and still flsah something from JVR to get the same great GPS performance?
I went back to KG3 and flashed the JVR modem without any luck.
Is there a combination I can do ?
Thanks,
Ian

w98seeng said:
I have an I9000M from Bell (Running on Telus) unlocked but not rooted.
I have had non-existent GPS since Kies updated me to KG3. I tried a couple of things but nothing helps.
For the hell of it, I flashed JVR (stock) that I got from samfirmware.com. The GPS was almost instant, showing 9 sats in about 10 seconds.
There is a Swisscom screen that appears when booting, so obviously this ROM is the Swiss version. Is there a problem with me using this Swiss stock ROM on Telus?
Can I go back to KG3 and still flsah something from JVR to get the same great GPS performance?
I went back to KG3 and flashed the JVR modem without any luck.
Is there a combination I can do ?
Thanks,
Ian
Click to expand...
Click to collapse
If the Swiss JVR is working for you then use that only issue you may have is some Market apps not being available to you CSC specific ones mainly, if you do run into that problem then you can always try Market enabler or Root Toolbox
I havent been on a Bell ROM since I bought the phone and never had issues with running EU firmwares
Also it seems weird that you being on KG3 with the JVR modem doesnt work, you could try just for ****s and giggles JVR with the KG3 CSC and see if that does anything, if it doesnt one other option would be to use KG3 with the KC1 modem, just do a search on here for CWM modems

DT3CH; said:
If the Swiss JVR is working for you then use that only issue you may have is some Market apps not being available to you CSC specific ones mainly, if you do run into that problem then you can always try Market enabler or Root Toolbox
I havent been on a Bell ROM since I bought the phone and never had issues with running EU firmwares
Click to expand...
Click to collapse
Thanks for this. Since the Bell ROM's never did much for me (Or the phone) I have wondered about using EU ROMs (or others) for a long while. I probably will try JVR for a bit and see how it works.
Many Thanks,
Ian

w98seeng said:
Thanks for this. Since the Bell ROM's never did much for me (Or the phone) I have wondered about using EU ROMs (or others) for a long while. I probably will try JVR for a bit and see how it works.
Many Thanks,
Ian
Click to expand...
Click to collapse
you can flash jvr (pda) with kg3 (modem) and kg3 (csc) that way you get the gps, the 850 band and the correct csc stuff

If I have KG3 already installed, (All 3 portions), will just installing the JVR PDA portion work keeping the KG3 modem and KG3 CSC intact?
Or do I have to do it the other way around?

w98seeng said:
Thanks for this. Since the Bell ROM's never did much for me (Or the phone) I have wondered about using EU ROMs (or others) for a long while. I probably will try JVR for a bit and see how it works.
Many Thanks,
Ian
Click to expand...
Click to collapse
No prob, if you dont like the standard Bell ROM, you could always try out different custom ROMs too, GB and CM ones
greeced said:
If I have KG3 already installed, (All 3 portions), will just installing the JVR PDA portion work keeping the KG3 modem and KG3 CSC intact?
Or do I have to do it the other way around?
Click to expand...
Click to collapse
That should work, if you experience any problems like a boot loop (unlikely)
Just do as stated above by shedden, flash JVR PDA, KG3 modem and CSC

FYI if you do NOT use Bell's CSC it WON'T re-install the bell bloatware

dlockhart said:
FYI if you do NOT use Bell's CSC it WON'T re-install the bell bloatware
Click to expand...
Click to collapse
I don't really care about Bell's Bloatware.. my whole thing is being able to download from the market as I usually did.
For instance.. When I tried JVR before KG3 was out, I couldn't download "Bell Self Serve" from the market, says it wasn't available.
I wonder if those of you who have done the JVR PDA / KG3 Modem / KG3 CSC Can actually download that piece of software, or will it still not allow you to.

lgsshedden said:
you can flash jvr (pda) with kg3 (modem) and kg3 (csc) that way you get the gps, the 850 band and the correct csc stuff
Click to expand...
Click to collapse
Would you have seperate links to those 3 files ?

They are posted in the thread by ramad use the stock odex ones.
Sent from my GT-I9000 using XDA App

[Q] i9000m CWM flash KC1 or KG3 baseband/modem ?

I'm a dev and I've spent 2 hours reading and trying...
Can I flash KC1 or KG3 from ClockworkMod 4 or 5 ? I'm on Linux and I avoid ODIN if at all possible.
I flash back and forth between CM7 nightlies and various MIUI ROMs. I need my SIM to work for s/w testing, for data and voice.
This i9000m phone is pretty new, was a Virgin Mobile model (pretty much Bell) and I use a SIM from an MVNO of Bell. (President's Choice.) With the stock ROM this worked without unlocking.
I tried some ZIP files for these basebands, meant for CWM3. I also tried replacing the modem.bin in the latest CM7 nightly. Nothing I do makes Settings -> About show a baseband other than "I9000XXJVK".
When I do a search for networks, it eventually shows me: 302610, 30220 and "CAN Rogers Wireless Inc." and I have emergency service I believe.
At the dial keypad I can't make "*#1234#" or "*#0011#" do anything.
Thanks !

No thoughts ?
I managed to get KC1 and KG3 loaded fine when installed along with Darky ROM using heimdall.
But when I install CM nightly, it overwrites the modem.bin.
And when I then use heimdall to flash the KC1 or KG3, CM says "Baseband version Unknown".
Same when I flash a modified CM zip with a new updater.sh and a removed modem.bin over Darky.
EDIT: Solved. I guess I need CM7/MIUI specific modems from this thread: http://forum.xda-developers.com/showthread.php?t=1158783

You're right buddy, that's exactly what i was going to say after reading your post.
Sent from my GT-I9000

SiCRider said:
You're right buddy, that's exactly what i was going to say after reading your post.
Sent from my GT-I9000
Click to expand...
Click to collapse
Well, thanks...
Now if I can just figure out how to enable the "SIM Toolkit" app...

How do I downgrade back to stock Froyo after upgrading to Overcome 4.1.0?

I have T-Mobile Galaxy Tab 7.
After using Overcome for a day, I think I prefer Froyo. Could anyone guide me as to how I can go back to Froyo 2.2? Also, in the process of upgrading to Overcome, I upgrade the tab to 2.3.6 gingerbread. Is it possible to just uninstall the Overcome and use gingerbread? Please guide me thanks.

yes, just follow overcome guide again to restock.
That is by using Odin to install the GB-Stock-Safe from overcome site.
With that you will get GB samsung stock, without anything overcome at all.
You will get the dialer, so in theory you can make phone call with the right modem.
Unless you really prefer Froyo stock from T-mobile that doesn't have dialer, you can get download the firmware and flash it. (if you can find your firmware version)

priyana said:
yes, just follow overcome guide again to restock.
That is by using Odin to install the GB-Stock-Safe from overcome site.
With that you will get GB samsung stock, without anything overcome at all.
You will get the dialer, so in theory you can make phone call with the right modem.
Unless you really prefer Froyo stock from T-mobile that doesn't have dialer, you can get download the firmware and flash it. (if you can find your firmware version)
Click to expand...
Click to collapse
So all I need to do is install GB-STock-Safe with odin and I'm back to gingerbread? If that's the case, I would like that, I like gingerbread. Also, after I installed overcome, I did get the dialer but when I installed my AT&T sim card, it wouldn't detect it at all. I then used Galaxy S unlock tool from the market to unlock. I was able to unlock it and then the Tab was able to recognize the AT&T sim but when I dialed a number, it would automatically hang up. How do I fix that? Is there something I need to install to get the phone working? thanks a lot!

have flashed a different modem before?
T-mobile has a different frequency. You may be able to flash AT&T modem or other modem via CWM recovery.
There is a modem thread in the dev section.

priyana said:
have flashed a different modem before?
T-mobile has a different frequency. You may be able to flash AT&T modem or other modem via CWM recovery.
There is a modem thread in the dev section.
Click to expand...
Click to collapse
Could you give me the exact directions please? I'm new to this. thanks

you have managed to flash overcome 4.1, you can't be that new.
First go to your setting, About, and note down your phone Baseband
that is actually your modem version.
Now, if you restock back to GB Safe stock, you will not be able to do what I said below, because this is based on CWM recovery, which is included in Overcome Kernel.
The good thing is, once the right modem gives you all the functions (call, sms, data) you can then restock to GB stock safe and the modem won't change.
Go to http://forum.xda-developers.com/showthread.php?t=1069727
and download a few of the modems. Maybe a JPZ, a KM2, an AT&T modem, and T-Mobile modem.
Put them in your sdcard like when you flash overcome rom.
reboot to recovery
choose to install from sd card
locate the modem zip file and install it.
reboot and try out your data, sms, and phone calls.
If no good, reboot again to recovery and try different modem.
It is a hit and miss for some people.
If you already restocked and has no CWM recovery, you can still use Odin to flash just the modem.

wow it's working! i downloaded JPZ modem and did installed from internal sd and now i can finally make phone calls!!1 thank you so much! btw, can I now go back to stock froyo or gingerbread and still keep the voice? also, if I were to just use odin to flash the modem on a stock foryo galaxy tab, i should be able to make phone calls right? again thank you so much!!!

yes, that is right. The modem should stick, if you downgrade to GB stock safe.
Having said that, if you downgrade to Froyo and the package contains a modem.bin, then it will get overwritten. Then you need Odin to flash the modem again.
What network are you in? As long as you are not in T-Mobile network, you should be fine. I myself own a T-Mobile galaxy tab, using JPZ modem in Australian Optus network. I can make calls and have 3G/HSDPA data connection.

I'm using it on AT&T... i don't have a data plan, but if I were to get a data plan, would it work with the JPZ model or do i need to use anothe rmodel? thank.s

Hard for me to say. I don't know much about AT&T
It seems like HSDPA in AT&T is 1900 MHz
I am pretty sure most networks are on 2100 MHz (Europe, Australia, Asia)
Can you get a data plan SIM and try it out, and try the AT&T modem in the modem thread as well?

priyana said:
Hard for me to say. I don't know much about AT&T
It seems like HSDPA in AT&T is 1900 MHz
I am pretty sure most networks are on 2100 MHz (Europe, Australia, Asia)
Can you get a data plan SIM and try it out, and try the AT&T modem in the modem thread as well?
Click to expand...
Click to collapse
I tried AT&T modem but I lose voice communication.

weird,
this external link
http://www.talkandroid.com/21900-sa...ers-bell-hacked-for-voice-calls/#.TzDI56fnitI
implies that modem_bell_i9000.zip lets you make voice call using euro rom, and has data as well.

Hey, I was trying to install ICS after downgrading back to gingerbread from overcome.
So, after get the CM9 and gapps from humberos website, I put them along with the overcome kernel in the root of internal sd and reboot in recovery however, after flashing the CM9 zip, I cannot see the overcome kernel anywhere. So i proceed without flashing that and after rebooting i get stuck at galaxy tab logo. can you help? thanks

You wasted quite a lot of effort.
You should go straight to ics from overcome.
try flash overcome kernel using odin (the tar version of the kernel)
Then boot to cwm and flash cm9 rom again followed by humberos cm9 kernel for P1000.
But if you have patience, wait a day or two. Humberos will have newer rom+kernel that fixed slow wifi and quite a bit.
Meanwhile you can flash stock safe again while waiting.
Sent from my GT-P1000 using XDA App