My iphone 3g is on restore mode it goes to restore nearly completed then error code 1015 comes up at the end

Check out this tutorial: http://www.leawo.org/tutorial/how-to-fix-itunes-error-4013-1361.html

Hola, el error 1015 sucede cuando tienes en un iPhone 3G con el baseband 6.15 (baseband de iPad), prueba restaurar el iPhone con un firmware customizado sin baseband (utiliza redsnow para crear el firmware customizado). Saludos

https://coolestguidesontheplanet.com/recover-and-restore-iphone-3gs-stuck-in-recovery-mode-in-itunes/

This usually happens when you hve problems downgrading firmware or jailbreaking.
Here is a guide to fix it.

To fix this error, you will have to make a couple of changes in your system's "host" file, by pointing it towards Cydia server instead of Apple's. Also this is not it, you may also receive another error during restore: 1004, or 1015 from iTunes saying: "The iPhone [you name] iPhone could not be restored. An unknown error occurred (1004)". The following step by step instructions will guide you on how to fix these errors so that you can restore any of your new iOS devices like iPhone 4 or 3GS to iOS 4.0.1 successfully.
Step 1: Download the required iOS 4.0.1 ipsw firmware files from here.
Step 2: Put your device into DFU mode (not recovery mode).

• Connect your iPhone to your computer.
• Turn iPhone off.
• Start iTunes.
• Hold Power and Home buttons together for 10 seconds or so.
• Release Power button but keep holding the Home button until your computer recognizes a new USB device.
• iTunes will now recognize your iPhone.

Note: Your iPhone screen at this time should be blank (black in color), if not, then you are most likely in Recovery Mode, not DFU mode.
Step 3: Before you proceed, you must make sure that you have your SHSH blobs saved on Cydia for the firmware version you restoring or downgrading to. If you don't have your SHSH files saved, you cannot downgrade or restore to iOS 4.0.1.
So now, what we will do is to trick iTunes into thinking that it is watching Apple servers, while in real, we are going to change the address to Saurik's server.

• Navigate to C:\Windows\System32\drivers\etc\ and locate "hosts" file.

Mac OS X users can get to "/etc/" directory by going through "Go -> Go to Folder" from Finder.

• Open this "hosts" file in Notepad (for Windows) or TextEdit (for Mac OS X) and add this

74.208.105.171 gs.apple.com line as shown in the screenshot below:
Now simply save this file and you are good to go!
NOTE for Windows 7 and Vista: Start "Notepad" with Administrator privileges by right clicking on "Notepad" app, and click on "Run as Administrator" option.
NOTE for Mac OS X: Make sure you have full read and write access on your account when you are saving the host file. If it still throws permission error, simply copy the host file to desktop, make the required changes, and then replace it with the original file in "/etc/" directory.
Step 4: You will now have to restore your iPhone to the firmware you downloaded in Step 1. Click on your phone icon from the sidebar in iTunes. Now press and hold left "alt" (option) button on Mac (Left "Shift" button on Windows) on the keyboard and then click on "Restore" (Not "Update" or "Check for Update") button in the iTunes and then release this button.
This will make iTunes prompt you to select the location for your downloaded firmware file. Select that ipsw file and click on "Open".
Step 5: Now sit back and enjoy as iTunes does the rest for you. This will involve a series of automated steps. Be patient at this stage and don't do anything silly. Just wait while iTunes installs firmware on your iPhone. Your iPhone screen at this point will be showing a progress bar indicating installation progress. Now at some point, iTunes will probably throw 1004 or 1015 error at you. This is normal, just ignore this error as the firmware has already been successfully installed on the device.
Step 6: Your iPhone at this point will be stuck in Recovery Mode, showing that "Connect to iTunes" screen. To exit your device from Recovery Mode, download this program called TinyUmbrella (Windows / Mac). Run it and the click on "Kick Device Out of Recovery" button. Your device will now restart normally.
This is it, you should now be able to jailbreak and unlock your device.

Hi see if you can restore with 4.1 with itunes then when you get the error 1015 kick it out of restore with a program called tiny umbrella i have used this several times and it works for me.
regards ps let me know how you get on

You can try to use "tinyUmbrella" to see if cydia has you ssh on file..
tinyumbrella website

once you start the software you click the button save my ssh..

once it's done processing you can click on start tss server

This tss server will allow you to bypass itunes server which restricts downgrading firmware...

Once Tss server is running you can start itunes

once itunes detects your iphone shift + click on restore

Select the iphone 3g 4.0.1 firmware (goto http://www.felixbruns.de/iPod/firmware/ to download this)

Once it restores fully at the end it will give itunes error '1015'

dont worry..

Install Libusb if you dont have it..(Click here)
after installing libusb just use this program.. ih8snow
Click on "Fix recovery mode loop"

Click on yes to "do you have libusb installed??"

Select iphone 3g from the list

your iphone will reboot..

now you can first activate it ..

then you can use safari to goto Jailbreakme.com
slide the slider at the bottom...

it will download cydia

when cydia is installed you have to add "repo666.ultrasn0w.com" as a source
Its a zero "0" in the sn0w not "o"...

Search google how to add new sources.. to cydia..

Once you are done installing the application inside the repo666.ultrasn0w.com source your phone will be finally unlocked..


Of course easier way out would be to pay someone who knows how to do this..

regards

Have you tried to restart your computer and repeat the restore? And make sure that you have an excellent internet connection.

Do that first, if the error is still there, check if you have the latest version of iTunes on your computer. If not, update your iTunes by opening it and selecting "Help" from the menu bar then select "Check for Updates". After the update, do the restore again.

If you still get the error, follow my instruction on how to put your iPhone to DFU mode and restore.

For more iPhone & iPod touch tips, click here.

Restoring your iPhone should help regain full functionality but please beaware this will completely wipe your iPhone memory so be sure to do a full sync and backup before you do anything.

1. With your iPhone on connect it to your P.C/Mac using the USB cable
2. Turn your iPhone off
3. Press and hold the home button while turning your iPhone on
4. Your PC/Mac should then detect your iPhone in "DFU mode".
5. iTunes will also detect your iPhone in "DFU mode" and allow you to select restore.

This can take up to 2 hours so be patient.

try respring it (central + power buttons together and then connect to iTunes in safe mode,choose full restore (it will erase everything but if you have back up can be restored).