Database Develop

Stuck in a boot loop.... no recovery/download mode

Hey all, just got my Captivate 2 weeks ago and successfully rooted and flashed with custom ROM following the directions on all the posts here. Last night, while attempting to switch from Paragon 3.0 to Phoenix 4.0, installation was aborted. After several unsuccessful recovery attempts through CWM, I finally followed directions and used Odin-one-click. Odin did its thing and phone rebooted immediately and got stuck in a loop.
ATT screen flashes on and off when phone is powered on. When plugged into PC, phone flashes empty battery and computer does not see the phone. I've tried just about every button combination I've come across and about every permutation of button/battery/USB/Odin combination on the PC to no avail.
Is my last resort the USB jig? Or are there other options? Any and all help would be appreciated. And thank you to all of you whose posts I used to get me this far.
Patiently awaiting any assistance......

If you can't get into dl mode a jig will be needed
Have you used odin before?
Do you know your build number

mcord11758 said:
If you can't get into dl mode a jig will be needed
Have you used odin before?
Do you know your build number
Click to expand...
Click to collapse
Build number.... inside of the phone I see 1010, REV 0.4
Is that what you were referring to?

Yes and that is what caused your odin problem
Read this
http://forum.xda-developers.com/showpost.php?p=10056254&postcount=36
Go to radio shack get a package of 100 k ohm resisters. Three twisted together in a tear drop shape. Touch the ends to the last 2 potions prongs closest to the head set jack. I have done this, it works.
http://forum.xda-developers.com/showthread.php?t=889128

Just in case this is how I enter dl mode
Take out sim, ext sd, and bat. In your case leave the bat out for like 10 minutes.
Put bat back in
Hold vol up and down
While holding plug in usb

maxyz said:
Hey all, just got my Captivate 2 weeks ago and successfully rooted and flashed with custom ROM following the directions on all the posts here. Last night, while attempting to switch from Paragon 3.0 to Phoenix 4.0, installation was aborted. After several unsuccessful recovery attempts through CWM, I finally followed directions and used Odin-one-click. Odin did its thing and phone rebooted immediately and got stuck in a loop.
ATT screen flashes on and off when phone is powered on. When plugged into PC, phone flashes empty battery and computer does not see the phone. I've tried just about every button combination I've come across and about every permutation of button/battery/USB/Odin combination on the PC to no avail.
Is my last resort the USB jig? Or are there other options? Any and all help would be appreciated. And thank you to all of you whose posts I used to get me this far.
Patiently awaiting any assistance......
Click to expand...
Click to collapse
Not sure if this is how you got into this situation in the first place, but did you disable the lagfix before flashing? If not, it may be what caused this.

mcord11758 said:
Just in case this is how I enter dl mode
Take out sim, ext sd, and bat. In your case leave the bat out for like 10 minutes.
Put bat back in
Hold vol up and down
While holding plug in usb
Click to expand...
Click to collapse
Thanks for the quick replies and assistance. The threads above were a revelation, I will try again to get it into download mode before making the jig. Keep your fingers crossed....

Gr8Danes said:
Not sure if this is how you got into this situation in the first place, but did you disable the lagfix before flashing? If not, it may be what caused this.
Click to expand...
Click to collapse
Did I disable the lagfix? I believe I did, I at least was cognizant of having to disable the lagfix, but it certainly is a possibility. Thanks for chiming in, appreciate all of it.

Someone please help
So I just tried to root my samsung fascinate 2.3.5 and i did the ODIN stock voodoo T959VKJ1.tar file using the PDA button and now my phone is stuck in boot mode and wont boot up properly. Please give me any steps to at least fix this to the original version.

b.smith1202 said:
So I just tried to root my samsung fascinate 2.3.5 and i did the ODIN stock voodoo T959VKJ1.tar file using the PDA button and now my phone is stuck in boot mode and wont boot up properly. Please give me any steps to at least fix this to the original version.
Click to expand...
Click to collapse
This is the captivate section not fascinate.
Sent from my SGH-I897 using xda premium

[Q] SS AT&T Captivate stuck on ATT Splash Screen

Hi, I have a SS/ATT Galaxy S. It was working fine. I made the mistake of running an update to change the ATT splash screen. The device boots to the ATT splash screens and stays there. You can hear the SS start up sounds as though the unit booted ok.
I've tried various Odins they all hang on file analysis. I've tried using different computers per the recommendations in the various threads. I've tried many of the one click and also separate file updaters. They all hang on file analysis.
I am able to use Droid explorer to view the device. I've also put a new update.zip on an sd card but nothing seems to change the splash screen.
I'm not sure how to tell what version the unit is currently on.
I can get to the 3 button state. It says Android System recovery <2e>.
I have the options to reboot, reinstall packages, delete all user data and delete cache data. I've tried each of them, no change.
I have tried to read many threads before bothering anyone. Your input would be appreciated.
Thanks

if you have the update.zip on your phone, in the root of your SD card.. then from 2eRecovery, select reinstall packages.. may have to do it twice. That will boot your phone into clockworkmod recovery.. and from there you should be able to mount storage- put a ROM on your device, flash and be good to go.

Reply to thread
Hi, Thanks for the fast response. I've tried update.zip on both an sd card and also via droid explorer, about 5 times. If I reboot, same thing, the ATT splash is there, and the Galaxy boot sound. I can get into recovery and droid explorer works. If I try Odin it hangs on file analysis. Anything else I can try? Thanks again.

Are you in dl mode when you try this, or recovery?

The phone is now bricked. I was in recovery mode as I saw the 3 button posts on holding the up/down and pwr. I just tried it with dl mode and odin3 and bricked it.(based on another forum's input to check repartition I think). Now it won't boot at all but I'm still able to get to dl mode but not sure what to run to fully recover.

Delphin9 said:
The phone is now bricked. I was in recovery mode as I saw the 3 button posts on holding the up/down and pwr. I just tried it with dl mode and odin3 and bricked it.(based on another forum's input to check repartition I think). Now it won't boot at all but I'm still able to get to dl mode but not sure what to run to fully recover.
Click to expand...
Click to collapse
If you can get to dl mode try using AIO Captivate to flash back to stock 2.1. I've had success as I flashed with the partition checked and had to go all the way back using ODIN contained in the AIO Captivate program. Found here

Delphin9 said:
The phone is now bricked. I was in recovery mode as I saw the 3 button posts on holding the up/down and pwr. I just tried it with dl mode and odin3 and bricked it.(based on another forum's input to check repartition I think). Now it won't boot at all but I'm still able to get to dl mode but not sure what to run to fully recover.
Click to expand...
Click to collapse
Yeah if you can get into download mode than you are not bricked. I would Odin or Heim back to JF6 and go from there. What happened when you tried reinstalling packages from 2e? I know you said everytime you reboot- but what did it say when selected reinstall packages?
Sent from my SGH-I897 using XDA Premium App

I'm back to 2.1, baseband I897UCJF6, Kernal 2.6.69, Eclair. Thanks to everyone for your very kind help. Much appreciated.

Delphin9 said:
I'm back to 2.1, baseband I897UCJF6, Kernal 2.6.69, Eclair. Thanks to everyone for your very kind help. Much appreciated.
Click to expand...
Click to collapse
Great.. glad to hear it
Sent from my SGH-I897 using XDA Premium App

Delphin9 said:
I'm back to 2.1, baseband I897UCJF6, Kernal 2.6.69, Eclair. Thanks to everyone for your very kind help. Much appreciated.
Click to expand...
Click to collapse
Now on to some real ROM flashing!! Glad you got it working. I did almost the same thing and was sweating bullets.

Yeah, it was quite scary. I actually purchased some 100k resistors on Ebay but didn't need to make the jig.
Can you recommend a good set of f/w to load? Is it worth it to move to 2.3?
Cheers...

Delphin9 said:
Yeah, it was quite scary. I actually purchased some 100k resistors on Ebay but didn't need to make the jig.
Can you recommend a good set of f/w to load? Is it worth it to move to 2.3?
Cheers...
Click to expand...
Click to collapse
Of course it is worthed it to move to 2.3 I mean, it comes with so many more features and is running just perfect as a everyday rom. You shouldn't be disapointed
Sent from my Mosaic powered I896 using Tapatalk

But, just in case, out wouldn't hurt to have a proper jig laying around. I'm just saying...

mrhaley30705 said:
But, just in case, out wouldn't hurt to have a proper jig laying around. I'm just saying...
Click to expand...
Click to collapse
+1.
I had to make a jig when I soft bricked it. Not fun. Since then I purchased one and am glad I did.

Well, that means I won't have wasted my $2.00.
I saw this and thought it worth to try. http://www.youtube.com/watch?v=D0aoabVtPJ8
In your footer, it says you're using mosaic.
e.g. ROM: Mosaic III, ¤Kernel: Xcal's #14, ¤Modem: JK4, ¤Launcher: ADW Ex
Can you point me to the correct files/process? I guess I'm scared of screwing it up again. when I look on the forum there's almost too much info for a noob to choose which is best. Cheers...

[Q] Captivate Bricked after Odin One Click

Hello. I have searched the forums and have not really found out an answer to my question. Earlier in the week I tried installing Andromeda with an ursa minor kernal I believe? (I was following a tut on youtube) I succesfully got ursa minor on my phone but the tutorial failed to mention I had to put Andromeda on the internal sd card to flash it. (first time trying to flash a rom so big noob). I decided to go back to stock and retry using Odin One Click. Odin bricked my phone because it is build number 1108 :/ I have an infinite ATT world phone boot loop because of this. I will be trying to make a jig/buying one soon to get back into download mode to fix this. I am not sure exactly what I am supposed to do once I am in download mode. I want to get back to stock. Obviously Odin One Click doesn't work because of my build number. What steps should I follow to go back to froyo 2.2 and to retry? Please help I am just not sure.

yakobo said:
Hello. I have searched the forums and have not really found out an answer to my question. Earlier in the week I tried installing Andromeda with an ursa minor kernal I believe? (I was following a tut on youtube) I succesfully got ursa minor on my phone but the tutorial failed to mention I had to put Andromeda on the internal sd card to flash it. (first time trying to flash a rom so big noob). I decided to go back to stock and retry using Odin One Click. Odin bricked my phone because it is build number 1108 :/ I have an infinite ATT world phone boot loop because of this. I will be trying to make a jig/buying one soon to get back into download mode to fix this. I am not sure exactly what I am supposed to do once I am in download mode. I want to get back to stock. Obviously Odin One Click doesn't work because of my build number. What steps should I follow to go back to froyo 2.2 and to retry? Please help I am just not sure.
Click to expand...
Click to collapse
You'll have to use the full Odin program and grab a stock ROM from the development section. Once your in download flash stock ROM with through Odin or heimdall. I'm not next to my computer so I don't feel like fishing for links ..but should be fairly easy!
Sent from my SGH-I897 using xda premium

yakobo said:
Hello. I have searched the forums and have not really found out an answer to my question. Earlier in the week I tried installing Andromeda with an ursa minor kernal I believe? (I was following a tut on youtube) I succesfully got ursa minor on my phone but the tutorial failed to mention I had to put Andromeda on the internal sd card to flash it. (first time trying to flash a rom so big noob). I decided to go back to stock and retry using Odin One Click. Odin bricked my phone because it is build number 1108 :/ I have an infinite ATT world phone boot loop because of this. I will be trying to make a jig/buying one soon to get back into download mode to fix this. I am not sure exactly what I am supposed to do once I am in download mode. I want to get back to stock. Obviously Odin One Click doesn't work because of my build number. What steps should I follow to go back to froyo 2.2 and to retry? Please help I am just not sure.
Click to expand...
Click to collapse
This is a Odin 1 click for KB1 2.2 stock. After that follow any roms instructions except if it says stock 2.1 ignore it and assume its stock 2.2

I was wondering if I should follow this thread??
http://forum.xda-developers.com/showpost.php?p=10056254&postcount=36

Might I ask do you need to get to 2.1?

prbassplayer said:
Might I ask do you need to get to 2.1?
Click to expand...
Click to collapse
When I got my phone (about a two weeks ago) it came with 2.2 already on the phone. I don't need to get to 2.1 but I was thinking I'd go to 2.1 and then upgrade to 2.2 using att? If I can?

But why? If you got it as is and its stock its att's 2.2. At any rate If your so inclined on flashing 2.1 the one you mentioned thats using full Odin with pit should work. I suggest doing it if and only if you have that jig handy. Also keep in mind that .tar probably has bootloaders in it (wich is a risk you really dont need to take) just my 2 cents

prbassplayer said:
This is a Odin 1 click for KB1 2.2 stock. After that follow any roms instructions except if it says stock 2.1 ignore it and assume its stock 2.2
Click to expand...
Click to collapse
Links in that thread seem to be broken:/ So I suppose I can't use that.

Ive never used this one but it is also a KB1 2.2 KB1

My ultimate goal is to get Andromeda3 on my cappy. It seems to be a good rom. Could I just flash that using oden? (put it in the pda slot) or will that not work until I go back to stock?
With this new thread you linked me to, Just put in odin and I should be good to go? Thank you for your help by the way.

Ive never used that rom. Follow their instructions and assume stock is 2.2 for you. Also The original link i sent you should have worked. Aperrantly mediafire.com is having issues tonight.

installing Andromeda3 doesnt require going back to stock, 2.2 or 2.1.
ODIN flash a custom CWM kernel
boot to recovery
flash rom
thats it

Pirateghost said:
installing Andromeda3 doesnt require going back to stock, 2.2 or 2.1.
ODIN flash a custom CWM kernel
boot to recovery
flash rom
thats it
Click to expand...
Click to collapse
I can't because I bricked my cappy. i can't go into recovery right now. I need a jig to get back into download mode to fix it.

prbassplayer said:
Ive never used that rom. Follow their instructions and assume stock is 2.2 for you. Also The original link i sent you should have worked. Aperrantly mediafire.com is having issues tonight.
Click to expand...
Click to collapse
Once I get my jig hopefully mediafire is up and I can download from the first link you sent me. That seems to be my best bet right now. Thank you for your help. I sure hope I can get my phone backXD

yakobo said:
I can't because I bricked my cappy. i can't go into recovery right now. I need a jig to get back into download mode to fix it.
Click to expand...
Click to collapse
you are stuck in a boot loop right?
if you power your phone off, hold down both vol buttons and hold down the power button until the ATT screen comes up, let go, does it not go into recovery mode?
or
download mode:
power off, while holding both vol buttons, plug in usb. does that not work?

yakobo said:
My ultimate goal is to get Andromeda3 on my cappy. It seems to be a good rom. Could I just flash that using oden? (put it in the pda slot) or will that not work until I go back to stock?
With this new thread you linked me to, Just put in odin and I should be good to go? Thank you for your help by the way.
Click to expand...
Click to collapse
Get ursa minor back on your phone, then mount usb in mounts and storage, then copy the Andromeda3 zip to the drive. You were almost there.
Fish around in the usb port with 301kOhms of resistance from radio shack. You will hit pins 4 abd 5 and you will be in download mode.

Pirateghost said:
you are stuck in a boot loop right?
if you power your phone off, hold down both vol buttons and hold down the power button until the ATT screen comes up, let go, does it not go into recovery mode?
or
download mode:
power off, while holding both vol buttons, plug in usb. does that not work?
Click to expand...
Click to collapse
No:/ no button combos work to get me in recovery or download mode. Getting a jig (hopefully today) so I can fix all this. Yes it is in a boot loop

AdamOutler said:
Get ursa minor back on your phone, then mount usb in mounts and storage, then copy the Andromeda3 zip to the drive. You were almost there.
Fish around in the usb port with 301kOhms of resistance from radio shack. You will hit pins 4 abd 5 and you will be in download mode.
Click to expand...
Click to collapse
Thanks. I tried putting the Andromeda on the phone by copying it over to the phone through the mounted sd card but it was all of a sudden "write protected" and showed up as a cd instead of an sd card. :/ I know I was real close but I made some mistakes along the way
also, when you say fish around the usb port. you mean inside the phone? Is there any danger of hitting the wrong pins and possibly hurting my phone? (say i hit pins 3 and 5 by mistake or something) or is it all pretty safe? I was going to try and attempt the jig method that only used the resistors but n oticed the pins were horrible small in the phone:/

yakobo said:
Thanks. I tried putting the Andromeda on the phone by copying it over to the phone through the mounted sd card but it was all of a sudden "write protected" and showed up as a cd instead of an sd card. :/ I know I was real close but I made some mistakes along the way
also, when you say fish around the usb port. you mean inside the phone? Is there any danger of hitting the wrong pins and possibly hurting my phone? (say i hit pins 3 and 5 by mistake or something) or is it all pretty safe? I was going to try and attempt the jig method that only used the resistors but n oticed the pins were horrible small in the phone:/
Click to expand...
Click to collapse
It's not inside the phone... it's the USB port on the phone. One pin is on top and the other is on the bottom. If you don't have a JIG, that's the easy way to do it. There's no power on the USB port. This is a quick way to do it. You'll be fine. It's safe.

AdamOutler said:
It's not inside the phone... it's the USB port on the phone. One pin is on top and the other is on the bottom. If you don't have a JIG, that's the easy way to do it. There's no power on the USB port. This is a quick way to do it. You'll be fine. It's safe.
Click to expand...
Click to collapse
Sorry, that is what I meant. I meant to place where the charger is plugged in to. Just seems like the pins are really really tiny. Thank you for your help gonna get my resistors hopefully today and get my phone working again.

Bricked Captivate - Random dots on the screen instead of Download mode

Hi there,
To brief the story:
Tried to upgrade my Rogers Captivate non-root Froyo to Gingerbread trough Kies the first attempt failed as after 30 min there was no progress on the installation bar, I disconnected the phone and restarted it, it booted up well and again I tried to upgrade. This time the bar filled up to 10% and then the screen on my phone went all Pink!! and the progress got stuck, then the phone was in semi-bricked state. I tried to flash back to 2.2 stock ROM on Odin 3 v1.82 the progress failed half way with a all purple screen (the green bar on Odin was almost at the beginning of the procedure). I thought to get it into DL mode once more to see if I could succeed but no DL mode anymore, all I get is random dots all over the screen!! and even when it gets connected on COM, ODIN cannot reach it anymore and it fails at Setup Connection. My belief is that my phone is bricked totally, but wanted to see if anybody on XDA has any thoughts for this.
Thanks for the help and time in advance.
Chrs.

Sounds to me like a faulty connection. Try another USB port or another cable?

Try heimdall..and another cable
Sent from my unbrickable cappy *bam*

your phone is not bricked. if it were bricked it would not turn on.
the pixilated screen means there is no params.lfs file on the phone anymore.
if you can get into download mode the phone can be saved.
try flashing the ATT one-click odin first... and rogers 2.2 after.
if still not working....
then i would try another USB cable, yours might have a bad connection.
next i would try another computer.

If anyone know trussello does.
TRusselo said:
your phone is not bricked. if it were bricked it would not turn on.
the pixilated screen means there is no params.lfs file on the phone anymore.
if you can get into download mode the phone can be saved.
try flashing the ATT one-click odin first... and rogers 2.2 after.
if still not working....
then i would try another USB cable, yours might have a bad connection.
next i would try another computer.
Click to expand...
Click to collapse
Sent from my unbrickable cappy *bam*

Thank you guys for all the responses.
I guess I found the cure for it. I plugged the phone into the power and after a while (5 min or so) the screen turned all white (the same as all pink and all purple thing which if one notices can see the very blurry shade of the notification bar on top!). I turned it off and try the volume up and down DL mode method, it turned on in the same all white screen, I started the Odin and voila, it passed the setup connection step (cannot relate the connecting to the power with the resolution I got in any way!!!). I got the stock version back now wanna try to root and clean up the mess.
Chrs,

BTW I am trying to update it to the most recent gingerbread version Rogers provided:
- in Kies it shows I-896!! although I used the Froyo stock version posted in Xda by TRusselo
- Therefore it doesn't recognize my phone and therefore I cannot flash the recent update
- does anyone have a stock version of the most recent 2.3.3 update handy?
another problem I got into is that I cannot browse all my media file in storage mode, out of 2000+ pictures it only browses 900 and even I cannot copy those as it seems unreachable
any suggestions/clues?

the roger captivate IS the i896 the i897 is the att.
you may want to check out your csc version read here in this thread....http://forum.xda-developers.com/showthread.php?p=17835946#post17835946
trying the 2.1 (toronto) version couldnt hurt either

TRusselo said:
the roger captivate IS the i896 the i896 is the att.
you may want to check out your csc version read here in this thread....http://forum.xda-developers.com/showthread.php?p=17835946#post17835946
Click to expand...
Click to collapse
ATT is i897 Rogers is i896.

Yes, but as TRusselo pointed out the CSC is missing so that is why it just shows I896.
Before getting into fixing the CSC I need to copy all my gallery files. I can browse them on my cell and swipe through all in the gallery but cannot copy them through neither of the connection modes.
-For Kies Update and Media modes it takes ages to cache the images but it fails to get all of them and then even fails to copy
- mass storage only browse 900 out of 2000+ where I cannot copy them
any solution for this?
Thx for all the help.

Trussello, a few things...
1. The guy who released that has 22 posts, no track record
2. That's a heimdall pacakge, not Odin
3. My one-click is much easier.
4. The only reason my package is tagged beta is because Heimdall is not fully operative for flashing PIT files. http://forum.xda-developers.com/showthread.php?t=1266172

AdamOutler said:
Trussello, a few things...
1. The guy who released that has 22 posts, no track record
2. That's a heimdall pacakge, not Odin
3. My one-click is much easier.
4. The only reason my package is tagged beta is because Heimdall is not fully operative for flashing PIT files. http://forum.xda-developers.com/showthread.php?t=1266172
Click to expand...
Click to collapse
OOPS posted wrong link!! somehow.... never seen that one before!
will fix later.

Please help i will donate/ pay u

I have a Samsung Captivate which has been rooted and unlocked...it was running 2.3.5 uckk4
I believe I got a virus from downloading some app that was not on the market well long story short I tried to flash it back to a different version
I believe I put something in odin bootload that I wasnt suppose to it was an accident as you see I am a total noob at this then I use the 1 click unbrick now my phone keeps rebooting itself but i looked at the about phone which i get to for a few seconds before it reboots itself again and this is what it says
Firmware
2.3.3
Baseband
1879UCKF1
Kernel Version
1897UCKK414489
BUILD
gingerbreadUCKF1
I have tried a master reset since I could get it into debug just that it keeps looping and it worked in odin but not on my phone and this is what it generated
<?xml version="1.0" encoding="UTF-8" ?>
- <REFLASH>
- <UNIT>
<ESN>00000000000000 /0</ESN>
<TIMESTAMP>20120424002823</TIMESTAMP>
<RESULT>_20120424002823</RESULT>
<SOFTWARE_NAME>Downloader</SOFTWARE_NAME>
<SOFTWARE_VER>3.00</SOFTWARE_VER>
<OEM_NAME>SAMSUNG</OEM_NAME>
</UNIT>
</REFLASH>
PLEASE HELP ME....if you can get my phone operational again I WILL DONATE MONEY TO YOU!
I have tried EVERYTHING and searched FAR AND WIDE!!!! I almost forgot Odin does not display my device anymore...ie such as com4...I really have tried everything that's why I am willing to donate/ pay you if you can solve my problem....if odin recognizes my device then it gets stuck halfway through. As of today my computer recognizes my device but Odin does not!
I have read and tried everything here
http://forum.xda-developers.com/showthread.php?t=858765
and here
http://forum.xda-developers.com/showthread.php?t=731989
and alot of other things listed and not listed on this site
NEW IFO: now I'm stuck at ATT logo and can not get into download mode

This thread will selfdestruct in 5...4...3...2...1....

DANG IT wrong section? SORRY MODERATORS!!!! SORRY

Please dont delete please just move it please!!!!

oh goodness... No need for donation but all you need to do is download a stock package odin like kk4 which is the most recent. Flash in download mode. There a sticky at the top of the thread list with all the packages.
In the future post in the questions/help section.

diskjockee said:
DANG IT wrong section? SORRY MODERATORS!!!! SORRY
Click to expand...
Click to collapse
Ok I gave you the only warning in the PM. I have moved this thread. A word from the wise. Learn what you are doing before you do it. This is not something to be taken lightly. You could very easily mess something up beyond repair. Take a few hours to spend reading and researching.

ThisWasATriumph said:
oh goodness... No need for donation but all you need to do is download a stock package odin like kk4 which is the most recent. Flash in download mode. There a sticky at the top of the thread list with all the packages.
In the future post in the questions/help section.
Click to expand...
Click to collapse
I have tried that it doesnt work. thats was one of the 1st things I tried

try this
http://forum.xda-developers.com/showthread.php?t=1266172

Make sure you're using a usb port that is on the motherboard (back of computer). Before you plug in your phone to flash, set up Odin first. Put all the files you are going to flash in the right places. After Odin is fully set up, plug in the usb to the back of your computer, then to you phone. Make sure you are in download mode. If the usb still isn't working, try a different USB port that is on the back of the computer. Connecting the usb to the back of the pc is very important. Odin doesn't recognize my phone when it's plugged in the front, when the phone is in download mode. Only the back usb ports.
If Odin still doesn't recognize the phone, try a different USB cable. But do everything else the exact same way as I described.
Also make sure you fully setup Odin before you plug your phone in to the usb.
Sent from my Serendipity VII flashed Captivate using xda premium

Limitz Cash said:
Make sure you're using a usb port that is on the motherboard (back of computer). Before you plug in your phone to flash, set up Odin first. Put all the files you are going to flash in the right places. After Odin is fully set up, plug in the usb to the back of your computer, then to you phone. Make sure you are in download mode. If the usb still isn't working, try a different USB port that is on the back of the computer. Connecting the usb to the back of the pc is very important. Odin doesn't recognize my phone when it's plugged in the front, when the phone is in download mode. Only the back usb ports.
If Odin still doesn't recognize the phone, try a different USB cable. But do everything else the exact same way as I described.
Also make sure you fully setup Odin before you plug your phone in to the usb.
Sent from my Serendipity VII flashed Captivate using xda premium
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I just tried that....it worked but now I'm stuck at the ATT logo

You probably have mismatch kernel and bootloader loader. Maybe you can try to wipe data / factory reset in recovery.
Sent from my Serendipity VII flashed Captivate using xda premium

If you continue to go into a bootloop then I recommend a USB jig for the galaxy s series. I had had that happen before, Nothing worked, couldnt get it into download mode, couldnt get into recovery, Until I got the USB jig, Fixed my problem right away, and I flashed back to stock. The USB jig is only 6 bucks on ebay. Ill link you if you are interested.

Limitz Cash said:
You probably have mismatch kernel and bootloader loader. Maybe you can try to wipe data / factory reset in recovery.
Sent from my Serendipity VII flashed Captivate using xda premium
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I know you're trying to be helpful, but there is no such thing as a kernel/bootloader mismatch...

b-eock said:
I know you're trying to be helpful, but there is no such thing as a kernel/bootloader mismatch...
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Are you sure? Becuz I tried to flash an overclock kernel on my rom, and kept getting a bootloop. Then after flashing a few different kernels, the kernel that came with my rom didn't even work. I had to go back to stock and reflash my rom.
Idk, maybe it was just me then. I apologize. thank you for correcting me, that's how we learn what's right, and what's wrong.
Sent from my Serendipity VII flashed Captivate using xda premium

noob advice
I'm a noob, so this comment might just serve to show how little I know, but whenever I find myself in a bootloop situation, I've noticed that the problem starts with the initial attempt of installing a rom via a kernel with an older version of CWM. During the post-install boot sequence, I'll see the AT&T splash screen, a CWM screen with script running, and then a reboot. Usually, accessing the CWM (now on a higher version) and reinstalling the rom will get it working. Not quite kernel / bootloader mismatch, but close.

whisky23 said:
I'm a noob, so this comment might just serve to show how little I know, but whenever I find myself in a bootloop situation, I've noticed that the problem starts with the initial attempt of installing a rom via a kernel with an older version of CWM. During the post-install boot sequence, I'll see the AT&T splash screen, a CWM screen with script running, and then a reboot. Usually, accessing the CWM (now on a higher version) and reinstalling the rom will get it working. Not quite kernel / bootloader mismatch, but close.
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Ohh ok. That might have been my problem before. Thank you.
Sent from my Serendipity VII flashed Captivate using xda premium

Try this.
Buy a jig. Either off of Ebay or mobiletechvideos.com
That week get you into download mode.
Then find the HEIMDALL flasher for a build. (my favorite was the one click for saurom Kk4)
Install heimdall drivers, and flash. Boom. Functioning phone.