Hello,
My S2 encounter big problems , ie it constantly freeze and reboot , sometimes it gets stuck on the samsung logo.
For the early history I was CM 10 and overnight I had the symptom of reboot, I decided to return to stock "clean" rom, so i flash :
1 ) KI3 rom ( rom wipe)
2 ) KK5
3) LPG
In addition I bought a new battery thinking about a hardware problem. I stayed on LPG a few weeks without too much trouble and this is the drama for a few days, returning reboot and freeze , unable to use the phone. ..
So, I came back to KI3 original but i have a lot of screen freeze and reboot. I tried to do a wipe data + cache with the samsung recovery but it does not change anything...
Someone can help me to save my S2 ?
thank you very much !
jordan49124 said:
Hello,
My S2 encounter big problems , ie it constantly freeze and reboot , sometimes it gets stuck on the samsung logo.
For the early history I was CM 10 and overnight I had the symptom of reboot, I decided to return to stock "clean" rom, so i flash :
1 ) KI3 rom ( rom wipe)
2 ) KK5
3) LPG
In addition I bought a new battery thinking about a hardware problem. I stayed on LPG a few weeks without too much trouble and this is the drama for a few days, returning reboot and freeze , unable to use the phone. ..
So, I came back to KI3 original but i have a lot of screen freeze and reboot. I tried to do a wipe data + cache with the samsung recovery but it does not change anything...
Someone can help me to save my S2 ?
thank you very much !
Click to expand...
Click to collapse
Download mod
Flash officiel Firmware JB Samsung all 1 one (Odin => PDA)
Reboot
Flash CF Root
Reboot
Enjoy
flash custom rom after
Voili,
coach83 said:
Download mod
Flash officiel Firmware JB Samsung all 1 one (Odin => PDA)
Reboot
Flash CF Root
Reboot
Enjoy
flash custom rom after
Voili,
Click to expand...
Click to collapse
Thanks coach83, i just try with I9100XWLS8 one package ROM, flash with ODIN is ok but the Galaxy S2
freezing on the boot at first configuration with Android logo.
Some have an idea ? I have read a lot of xda topics to reset phone but nothing seems to be working
Hopper8's 'Odin troubleshooting' thread. Find it. Try the stuff in that thread & you should end up with a successful flash (doesn't matter that it was essentially written for the I9100 - the I9100P is the same difference + NFC).
Thanks MistahBungle but flash with ODIN works for me, i have the green message "pass" so i don't think Hopper8 will solve my problem...
Your phone is bootlooping after the flash, which means it hasn't been successful regardless of whether Odin shows pass or not. Find his thread, read it, try the stuff in it. In particular try flashing a 3 part firmware which will wipe the phone, this will likely remove any remnants of whatever you had on the phone previously which is probably causing the bootloop after you flash.
This might also be one of those cases where perseverance fixes things; sometimes you can try 10 flashes which all seem to pass, yet the phone won't boot normally - you try the 11th (as an example) & for whatever reason it works. Try a 3 part firmware, then everything else in his thread until it works. There are no magic fixes here.
Ok i will try. When you say "try flashing a 3 part firmware" did you mean with pda, phone and csc file ? Because i have try this too with KI3 rom...
Yes, that's what I meant. Try it again then with a different stock rom, and as many others as you need to. There's only one way to fix it, and experience on here over the past two years shows persistence is the key. Unless you'd rather take it to a service centre & explain how the phone got into the state it's currently in & pay them to fix it ?
Nop
Ok so new USB cable, new USB port, new stock ROM and flash again and again is my program for today
Edit : According to you, do i try with pit file or not ?
Related
Hi guys,
as you know some days ago, Samsung has leaked their SGS2 ICS firmware, which I learnt on sammobile.com.
In their article, was a tutorial to install it, so I did.
I tried it a bit, but have been desapointed, so I decided to flash back to MIUI.
Thus I first flash another kernel, but here my trouble start.
Long story short, if I don't use the leaked, buggy firmware, I have a "Kernel panic - upload mode" and Kies does not recognize my phone to flash it back to stock.
I figured out that in the tutorial I have been told to change some file I've never flashed (like the pit, the modem and I think the CSC). Files that I don't know anything about. So I thought that those files weren't compatible with previous kernel etc. but as I don't know much, I can't be sure...
So I am know with a very buggy phone (for instance, I cannot be phoned, but I can phone to people) or a kernel panic. Help please :/
By the way, if someone could explain the meaning of those files, it would be cool, not to do the same mistake again.
And as I think : in all the tutorials using ODIN, it's said the I must not check "re-partition", what is it about ?
Thanks, and sorry for my poor English
Some updates here.
I thought yesterday, as there were those files (.pit, csc and stuff) in the downloaded archive on sammobile to flash leaked ICS, there were in the others firmware too, and I was right.
So this morning I flashed back to official 2.3.6 and it worked well. Then I flashed to xcell kernel (for Miui) and tried to flash MIUI 2.1.6. The kernel flash worked, as I rebooted normally but after flashing MIUI, another kernel panic :/
Did you wipe before flashing MIUI?
I did it after flashing, but still before rebooting.
Is that a mistake ?
If you wipe after flashing then your phone won't even boot.
So I think you did not wipe at all.
Yes I did, and I tried once again just now, wipping before flashing, but after the Samsung GS2 logo, still the kernel panic screen.
Clean Slate for those that balls up the firmware .Or need to return to service or decide if its hardware/firmware problem .
Backup data first if phone is working .
Boot CWM recovery
Mounts and Storage
Format cache data system sd card .
Remove battery
Boot to download mode
Open Odin
Install correct stock firmware .
Then read and learn before flashing anything else .
jje
Where can I find the correct stock firmware ?
I'm kinda lost with all the versions and stuff.
And when flashing, I would like to know what I do, but noone, nowhere, explains what we do, just "do that stuff and it will be good".
Swali said:
Where can I find the correct stock firmware ?
I'm kinda lost with all the versions and stuff.
You shouldd stop flashing and start READING THE BASICS you are flashing test roms from complete ignorance .
Stock firmware here you should know what your firmware is .
Stock Roms .and csc
http://forum.xda-developers.com/showthread.php?t=1075278
jje
Click to expand...
Click to collapse
Ok, I admit it, I was dumb doing it :-/
So now I am under stock both kernel and rom (2.3.5) and Kies says that there is an update but my phone isn't ok to do it, but that is not what I want.
I wanted to reset my phone through Kies to be sure all would be set to stock, but now Kies doesn't let me do it, there is no option to do it.
I think that the rom, even if official, is not good for my phone.
On the topic you linked, I choosed XXKI4 (France, if I understood well) for the rom.
Kies says my version is "I9100XWKJ2/I9100XEFKJ1/I9100XXKI4/I9100XWKJ2".
And my phone says :
- Banseband : I9100XXKI4
- Kernel : 2.6.35.7-I9100XXKI4-CL611039 [email protected] #2
- Version number : GINGERBREAD.XWKJ2.
Is that all ok ?
What I would like to do is flashing MIUI 2.1.6, so is it good to do it now ?
Make sure you have flashed back the old bootloaders, see this post: http://forum.xda-developers.com/showpost.php?p=21146446&postcount=2
Ok so I flashed an old bootloader then a custom kernel and to finish the latest MIUI and everything went well !
Thank you, guys !
I'm hoping someone can tell me the exact filenames of the rom and or kernel I need to restore my Galaxy S2 to stock rom for O2 UK.
I've tried various UK ones from this thread and flashed using Odin. But all that happens is a boot loop everytime. The recent one I tried was I9100XWKE1_I9100XXKDJ_I9100O2UKE1_HOME.tar
but as mentioned, all I get is a boot loop.
Can anyone assist?
It shouldn't matter which O2 rom you use. Only you're going to know exactly what firmware was on your phone when you bought it, but again, that's not important.
Frankly, if it were me, I'd get the latest stock firmware available for phone model/country/carrier with the PC version of Checkfus (search for it on here/Google) & do it that way. Just my 3 shekels worth.
But before you go down that path, have you tried a factory reset ? If you have & it didn't fix the bootloop, then the Checkfus route is worth considering. You get one file which you flash in PDA section of Odin & done.
Thanks for that. I tried the software and downloaded the exact rom to use for my country and network. I flashed it in Odin but again, it sticks at the boot logo. Not so much of a boot loop but just stays on the animated S logo.
O2 UK simple KDD was the first one posted in the branded provider roms thread .
But why not use your original saved firmware ??? or at least search for that one as non but you knows for sure what it was .
Clean Slate for those that balls up the firmware .Or need to return to service or decide if its hardware/firmware problem .
Backup data first if phone is working .
Boot CWM recovery
Mounts and Storage
Format cache data system sd card .
Remove battery
Boot to download mode
Open Odin
Install correct stock firmware .
Still problems use usb jig to set rom counter to zero .
Return to service centre .
jje
I'm stunned.
All these roms I tried and the whole issue was not wiping cache etc. Now I've done it, seems to be working. Finger crossed. Thanks for pointing me in the right direction.
Nothing is wrong with your rom, what you do now is put it in download mode, flash cf-root, go into cwm, wipe factory,cache, and dalvik cache, then turn on device leave it for at least 12 mins (sometimes it just boot loops for awhile and works, it happened to me before, after it happens once it wont happen ever again), for more info read my signature, cf-root is labeled chainfire
Hello all,
I have tried many things before asking for help, but nothing worked so far.
Here is the story:
I was on ICS 4.0.4, with default ROM coming from carrier.
I wanted to install CM9.1,
spent countless hours doing all backup and reading tutorial.
Tried finally yesterday and it was stuck doing "wiping data". Left it for 20min+ and nothing.
After restarting it, it is now stuck on the boot logo.
I couldn't enter anymore CWM or stock recovery (up+home+power), but could enter Download mode.
So I tried a couple of things I have read on the forum, like installing Siyah-s2-v5.0.1.tar through Odin 3.04 but I still cannot enter recovery mode.
I've read (too late) about the mmc brick bug (couldn't find anyone speaking about it in any tutorial until I reached this point... nothing on CM wiki or in other tuto... classic!).
I hope I'm not in this case though as I can still go to DL mode, and the phones having the brick bug are completely dead (blank screen or no DL mode), as per http://forum.xda-developers.com/showthread.php?t=1756242
I managed to finally get CWM working only by using GT-I9100_ICS_ClockworkMod-Recovery_5.5.0.4.tar from Odin, then tried to install CM9.1 from SD card but after reboot it is stuck on the blue cyanogenmod animation boot screen and nothing happens.
Tried also to restore from CWM my nandroid backup, but during the restore it seems to hang then restart by itself, and then I'm back to Galaxy S boot logo (the animated one with the big S).
And after this I have lost again access to recovery mode.
I can't go back to stock and I can't install CM... I was not expecting such issues, it all seemed pretty basic on paper.
I'm really stressed and don't know what to do
Flash a stock rom in Odin (download mode), re-root your phone/flash a kernel with CWM, restore your backup ?
Hi,
thanks for answering,
I have tried to locate such a rom, but I'm not sure which one... is there a specific one to try ? could you point me to it please ?
so far I have tried I9100XXLPQ_I9100OXALPQ_I9100XXLPQ_HOME.tar.md5
but no luck
you also say "re-root", at the time I used this method:
[GUIDE] ROOT/UNROOT Stock ICS Firmware without flashing unsecure kernel - xda-developers
http://forum.xda-developers.com/showthread.php?t=1501719
Do I need root to install Siyah kernel from Odin ?
I'm trying one from sammobile... let's hope :/
The bad thing is I had no Yellow triangle at the beginning since I'm stuck in this boot loop or no boot to be precise.
Now that I have tried different things to fix it, it is still not working and I have my flash counter = 10.
I cannot even go back to the shop, is there a way to reset it knowing I cannot even reach the OS, I have only DL mode or CWM...
Use a stock rom for your region/carrier (or any stock rom from any region really), it doesn't really matter as I presume you'll be restoring a backup and/or going back to a custom rom anyway won't you ?
Samfirmware & AndroidFirmwares.net have lots of stock roms.
No, you don't need root to flash an Odin version of Siyah. So yes, you can flash that after you've got stock up & running to root your phone rather than re-rooting your phone by flashing a CFRoot kernel or using another root method. Just make sure the version of Siyah you're going to flash matches up with the stock rom you've got on (I.E if you flash a GB stock rom use GB Siyah, ICS stock = use ICS Siyah, etc, etc).
thank you again, I'm downloading the rom from sammobile matching my carrier,
Would you be so kind to send me a PM with your skype username or anything to "chat" with you ? I'm really worried and I spent all night already trying to fix it with no progress at all
Don't worry about the flash counter. That's the least of your problems while your phone is borked Worry about it when it's fixed. There's nothing you can do about the triangle while your phone is cactus.
When you've got it up & running again, use Triangle Away.
But first things first.
---------- Post added at 04:02 AM ---------- Previous post was at 03:59 AM ----------
You're welcome.
Um, no. Absolutely not. Nothing personal, but if I did that for every person who's asked me for 'hands on' help since I've been here, I'd have spent my time doing nothing else. I don't do 'personal' with people from XDA (which is why I have PM's blocked except for mods).
Besides, you're going to learn much more fixing this yourself. I've given you a stack of information thus far, ball is in your court. Every answer to every question you could possibly ask is on this site. It just sometimes takes a bit of work/reading on your part to find it.
megosu said:
thank you again, I'm downloading the rom from sammobile matching my carrier,
Would you be so kind to send me a PM with your skype username or anything to "chat" with you ? I'm really worried and I spent all night already trying to fix it with no progress at all
Click to expand...
Click to collapse
ok I understand.. it is just I have literally spent more than 8 hours on it and had not make any progress at all (even worse I cannot return it to the shop because of the yellow triangle).
I appreciate your help, it gives me a bit of hope but I'm in a very bad situation and I feel I have read and do so much already with no success at all.
I will try your option of restoring the one from Sammobile, I have tried other before without any luck, maybe this one will do... (5min left to DL it).
thanks again for your support
I know where you're coming from. The first flash I tried when I got my phone in 2011 borked because I was careless, and it took me a bit over a day to get the right info/files/etc to get it fixed. I know it's frustrating/tiring/annoying & you're wondering at the start whether you can even fix it. But as long as you've got download mode 99 times out of 100 you can save it.
And as I said, it's good experience; once you've fixed it, you'll be able to handle anything that comes up in future
Let us know how you go. I'm going to bed shortly, but I'm sure someone else will step up & help if you have any further problems.
You're welcome Happy to point you in the right direction.
I have flashed the rom, the exact same one as I had before everything happened...
if it helps, I flashed it from Odin 3.04 as PDA.
I9100BVLPH_I9100TMULPH_I9100BVLPE_HOME.tar.md5
I'm now back to the Samsung GALAXY S2 GT-I9100 logo and nothing happens.
I cannot use recovery mode,
I can use DL mode (it shows 11 counts and current binary as Samsung official.)
update:
I left the phone on the first logo for about 5min and it moved to the next Samsung Galaxy S2 logo, with the big animated S.
I'm waiting but nothing else is happening.
I'm still desperate to fix it.
One thing which can be relevant, whenever I try to wipe or format /data from CWM, my phone is restarting after a few minutes or is saying it cannot be done.
I can format /cache and /system.
Could it be the root cause ? Any way of fixing it ?
Thank you
update: I cannot mount /data from CWM, it says Error mounting /data!
is it the brick bug ? :|
Easy now....your device is still good.
Those animations should take like 1-2 mins when you flash a rom.
Now, you are completly sure that you are actually flashing the right ROM for your device model?
If so, just keep flashing stock roms until you're up and running again, so you can start from scrap.
I tried, the issue is as soon as I flash a stock rom (through Odin), then I can't get into stock recovery mode anymore, I have to flash GT-I9100_ICS_ClockworkMod-Recovery_5.5.0.4.tar to get back the recovery mode.
I tried to flash several times, I think it is down to the fact I cannot mount or format /data.
Which is why I'm wondering if it is the famous brick bug.
My device is GT-I9100 and I took the stock rom from sammobile:
I9100BVLPH_I9100TMULPH_I9100BVLPE_HOME.tar.md5 which is ICS 4.0.4 (that I had before trying to move to CM9.1 and having all this mess in my hands.)
flash this:
http://www.sammobile.com/2012/11/15/i9100xxlsj-%E2%80%93-galaxy-s-ii-android-4-1-2-jelly-bean-test-firmware/.
you are on siyah kernel right?
what you wanna do know is to get to whatever rom your flashing, forget about cmw for now.
this also might help:
http://forum.xda-developers.com/showthread.php?t=1457458
So it is not lost yet ? Not the brick bug ?
just to be sure:
you want me to install through Odin: Siyah-s2-v5.0.1-CWM.zip
then going back to DL mode
I flash through Odin: I9100XXLSJ_I9100OXXLS1_OXX.zip (coming from your link).
anything I'm missing (even if it seems obvious, please let me know as I'm maybe missing something important)
?
I still cannot do Factory reset... is it a problem ?
I dunno what kernel you are using, If stock 4.0.4 kernel you should flash siyah first (safe kernel, no brick bug), and then countinue flashing the ROM. Check out the brick bug thread in general SII forum for directions if you want.
BTW, Odin recognizes your phone right? Check it out, you'll get a huge long breath.
BTW 2: you don't have any kies applications running in your pc.....am I right? if so, CLOSE THEM ALL!
I did had stock 4.0.4 kernel when I first tried to follow CM9.1 wiki, and I did a factory reset through CWM... which is why I think I might have bricked it...
I have checked the brick bug thread (too late it seems...) but so far I can't be sure if I'm in this case or not as they say they can't even reach DL mode, and I can.
Odin recognizes my phone, yes, but anything I flash is stuck on the animated logo.
I do not have Kies installed, just installed the drivers.
Hi,
my galaxy s3 freeze and reboot itself automatically after 10 second (like a loop).
I did read almost every thread about this issue and I've been trying to fix it for two weeks :angel:
I tried to flash many roms (my phone's binary counter exceeded 30)
stock roms (ICS, JB)
custom roms
custom kernels
and I tried to wipe every thing
wipe cash
wipe data
wipe battery
wipe dalvik
The problem started two months ago. The phone was rebooting itself once a week. one night, it rebooted itself four times. then, It entered an infinite loop of freezing & rebooting ( on Samsung logo).
I used "Odin" to fix it by installing official rom from "Samsung-update". NOW, it still freezing but not on Samsung logo.
I don't know if it is "sudden death".... BUT I don't think so becuse I was using Android 4.1.1 and it still working for almost 10 second
---------------------------
It was working on Android 4.1.1 official rom with custom kernel (siyah)
the CPU clock was modified to be 1200 instead of 1400 (to save the battery)
so you read all the other threads and still decided to create a new thread instead of posting in the multiple existing ones?
well done
and why have you expanded your text size? you wont get an answer any quicker
DSA said:
so you read all the other threads and still decided to create a new thread instead of posting in the multiple existing ones?
well done
and why have you expanded your text size? you wont get an answer any quicker
Click to expand...
Click to collapse
most of them are solved or talking about sudden death.
I don't think my problem is sudden death and no one will read my problem if it was in solved thread.
about the size it was to make it easier to read
Wipe phone flash stock rom via Odin.
Still a problem take to a service centre .
jje
JJEgan said:
Wipe phone flash stock rom via Odin.
Still a problem take to a service centre .
jje
Click to expand...
Click to collapse
The outer screen is broken and my phone is rooted
I think I'm going to change the screen and unroot the phone then follow your advise.
will they be able to detect that I replaced the screen?
SHAD0W-WALKER said:
The outer screen is broken and my phone is rooted
I think I'm going to change the screen and unroot the phone then follow your advise.
will they be able to detect that I replaced the screen?
Click to expand...
Click to collapse
Yes unless they are very stupid .
jje
I'm in a bit of a tight situation over here. My mom's phone was having issues, so she wanted me to fix it before I left to visit my grandparents. I found a stock ROM for the phone (GT-i9100 International) and flashed it, but the phone always got stuck on the "Samsung Galaxy SII GT-I9100" boot screen (occasionally it would show the "O2" screen, as it was a ROM for Ireland). I tried a different ROM (can't remember what country it was), and I'm still stuck with the same problem. This time no O2 screen though. I've downloaded my ROMs through sammobile.com and I'm using ODIN v1.83.
The label under the battery reads:
Model: GT-I9100
SSN: -I9100GSMH
What ROM should I use and where can I get it? I found this thread with a link to the ROM for the international version, but Hotfile has been shut down, so I can't download it.
Sorry if I could've found the answer with a few more hours of searching, but I've got less than 24 hours to find a fix and I was hoping that someone else could help me. Thanks a lot!
EDIT: I'm in the U.S., if that matters.
Try AndroidFirmwares.net or Samsung-Updates.com. If it were me in that situation (I.E not my phone), I'd be putting whatever the latest firmware is for the carrier/country.
Any region?
MistahBungle said:
Try AndroidFirmwares.net or Samsung-Updates.com. If it were me in that situation (I.E not my phone), I'd be putting whatever the latest firmware is for the carrier/country.
Click to expand...
Click to collapse
Should any region work to get the phone up and running? I just need to get it back up so that I can root it and flash CM10. Thanks.
Yep absolutely. If your end result is to root the phone & put a custom rom on, use any stock rom you can get your hands on. Though I'd be avoiding 4.0.4, anything other than that should be fine.
MistahBungle said:
Yep absolutely. If your end result is to root the phone & put a custom rom on, use any stock rom you can get your hands on. Though I'd be avoiding 4.0.4, anything other than that should be fine.
Click to expand...
Click to collapse
Is 4.1.2 OK, or should I go for 4.0.3 or below?
Doesn't matter, take your pick.
More info on problem
I tried installing two other ROMs (from androidfirmwares.net), one 4.1.2 and one 2.3.6. The 4.1.2 didn't get me anywhere, but after I flashed 2.3.6 the phone said the assert check failed. GT-i9100 is on the list of what it checked for. (I've never had any luck with the assert checks on any of my Samsung phones: GS Captivate, GSII Skyrocket, or AT&T GSIII. I've always had to remove the check in my update script.) I attached a picture.
EDIT: Since the attachment doesn't seem to be working, here's a Dropbox link.
Pic won't load for me, but it mentions 'recovery error', what exactly are you doing/what's the problem ?
MistahBungle said:
Pic won't load for me, but it mentions 'recovery error', what exactly are you doing/what's the problem ?
Click to expand...
Click to collapse
My process:
Open ODIN v3.09
Plug in the phone, already in download mode.
Click the AP button and load my .tar.md5.
Click Start.
Wait for it to finish, leaving the phone untouched on the table.
I just tried another USB cable, but to no avail. I've also tried unplugging the phone right after it reboots and ODIN says "PASS!", but no luck there either. I just tried another ROM that just finished downloading and it's giving me a similar getprop() error. At the bottom of the output in red it says:
E:Error in /cache/recovery/sec_csc.zip
(Status 7)
Installation aborted.
I don't think there's any way for me to edit the update script, as the tar contains a bunch of filesystem images. Even if it was easy to edit it would ruin the checksum verification.
Check out the picture on Dropbox here.
What are you trying to do in Android recovery ? Given what your stated aim is - get a stock rom on the phone, re-root it, put custom rom on, you shouldn't be using Android (I.E stock) recovery at any stage.
The process should be:-
*Flash stock rom with Odin in download mode (I.E phone off - home/vol down/power, not home/vol up/power)
*Root phone with whatever method
*Flash custom rom with CWRecovery, which you'll get once you root the phone
So....You need to go step by step. Start with flashing the stock rom with Odin, and try to boot the phone normally/make sure that was successful before doing the next two steps. Look for Hopper8's 'Odin troubleshooting' guide if you're having trouble getting a successful Odin flash.
Once you've done that, root the phone & make sure you have CWRecovery working, then flash the custom rom.
The phone boots to the recovery screen after it finishes flashing with ODIN. I put it into download mode, run ODIN, and then it that error screen comes up on the next reboot.
Try flashing the three part firmware linked to in Hopper's thread first (this will wipe the phone). I can't help but think we're missing some info re: what's been done to the phone previously here if the phone is booting into recovery mode after being Odin flashed. It shouldn't do that. After an Odin flash/pass the phone should boot normally, assuming it's not a case of the NAND being corrupted (it probably wouldn't boot into recovery if that was the case/you'd be left with constant bootloop)
I know you've mentioned what's on the sticker on the phone chassis under the battery but are you absolutely 100% sure it's an I9100 ?
MistahBungle said:
I know you've mentioned what's on the sticker on the phone chassis under the battery but are you absolutely 100% sure it's an I9100 ?
Click to expand...
Click to collapse
At the top of the download mode screen it says "PRODUCT NAME: GT-i9100". I don't know any other way to tell besides this and the sticker on the back. There are no carrier markings anywhere, and this phone was purchased because it had an FM radio, which only the international version had.
And assuming by "Hopper's thread" you mean this one, I can't because the files are no longer available.
In that case, you're stuck with the other suggestions to try in his thread & continuing to flash stock roms until you get a properly successful flash I.E phone boots/works normally. There might be something really obvious here being missed, but because we're not there with you/don't have the phone in front of us it might be difficult to work out.
It's working!
Yay, I got it to work! I flashed a custom kernel (jeboo), which allowed me to get into CWM. From there I sideloaded CM10 and now it's up and running! Only I still have a problem with internal storage... (That was the problem I was trying to fix originally.) Would the next thing to try to fix that be flashing a PIT file? If so, any tips for doing that?
I'm going to put off trying to fix that problem and do it when I get back. For now it works as a phone, and that's what's most important to her anyway. Thanks for your help MistahBungle.
Solved!
For anyone else who comes across this thread, I was able to solve my problem permanently by flashing a new PIT file. I found the correct PIT files for the GT-i9100 in this XDA thread. It seemed my partitions had become messed up long ago, as the phone had been showing a 2GB /data partition and only a 2GB internal SD card partition (which should've been closer to 12GB) for some time.
I choose a 4GB data partition (since I was running low on /data space last time). Oddly enough, booting the stock ROM after flashing the PIT only showed a 2GB data partition. Once I flashed CM10 it showed as 4GB though.