Let me clear this upfront. The following instructions will only help downgrade iPhone 3G which is currently on iPhone OS 3.1.3 with 05.12.01 baseband and older bootloader 05.08. This wont work with iPhone 3GS.
If your iPhone meets the above criteria, you can then use the latest version of Fuzzyband which supports iPhone 3.1.3 to downgrade your 05.12.01 baseband to the older 04.26.08 even if you accidently upgraded to the stock iPhone OS 3.1.3 from iTunes. Once you have downgraded your baseband, you can then use ultrasn0w to unlock your iPhone on iPhone 3.1.3 firmware. Here’s how you do it.
Step 1: To downgrade your baseband from 05.12.01 to 04.26.08, you must first jailbreak your iPhone 3G running firmware 3.1.3 by using any of one these guides: redsn0w 0.9.3,redsn0w 0.9.4, sn0wbreeze or PwnageTool 3.1.5.
Step 2: After you have jailbroken your iPhone, Go to “Cydia” on your iPhone and Search for “Fuzzyband” and then install this application.
Step 3: Start “Fuzzyband” app and touch on “Downgrade” button to downgrade your Baseband from 05.12.01 to 04.26.08.
Step 4: You should now be able to perfectly unlock your iPhone 3G using the latest version of ultrasn0w by following the step-by-step guide posted here.
NOTE: For those of you who don’t know your bootloader, simply run Fuzzyband and it will report the version number for you.
You can follow our complete jailbreaking guide for iPhone 3.1.3 firmware for iPhone 2G, 3G, 3GS and iPod touch 1G/2G using redsn0w 0.9.3, redsn0w 0.9.4, sn0wbreeze,PwnageTool 3.1.5. Unlocking can be done using ultrasn0w or blacksn0w.
For iPhone 3.1.2 firmware, you can use blackra1n, PwnageTool, redsn0w, sn0wbreeze,ultrasn0w and blacksn0w to jailbreak and unlock your iPhone and iPod touch.
Download iphone Browser here
Then follow these instruction...
After you download and install the iphone browser...here's next
.Plug your ipod/iphone on your pc.
Open iPhone browser
Then on Keychains folder right click the keychains.db after that close iPhonebrowser.
Then Restart your ipod/iphone and see if it is working
*3001#12345# and tap Call. Enter field mode Field mode reveals many of the inner settings of your iphone specially up-to-date network and cell information
*#06# Displays IMEI. No need to tap call IMEI is the unique identifier for your cell phone hardware together with your SIM information it identifies you to the provider network
*777# and tap Call. Account balance for prepaid iPhone
*225# and tap Call. Bill Balance. (Postpaid only)
*646# and tap Call. Check minutes. (Postpaid only) These three are pretty self explanatory
*#21# and tap call. Setting interrogation for call forwards. Discover the settings for your call forwarding. You'll see whether you have voice, data, fax, sms, sync, async, packet access, and pad access call forwarding enabled or disabled.
*#30# and tap Call. Calling line presentation check. This displays whether you have enabled or disabled the presentation of the calling line, presumably the number of the party placing the call.
*&76# and tap Call. Check whether the connected line presentation is enabled or not. State whether the connected line presentation is enabled or disabled. Presumably similiar to the calling line presentation.
*#43# and tap Call. Determine if call waiting is enabled Displays call waiting status for voice, data, fax, sms, sync data, async data, packet access and pad access. Each item is either enabled or disabled.
*#61# and tap Call. Check the number for unanswered calls. Sho the number for voice call forwarding when a call is answered. Also show the options for data, fax, sms, sync, async, packet access and pad access
*#62# and tap Call. Check the number for call forwarding if no service is available. Just like the previous, except for no-service rather than no-answer situations.
*#67# and tap Call. Check the number for call forwarding when the iPhone is busy. And again, but for when the iPhone is busy.
*#33# and tap Call. Check for call control bars
Here you will find all GSM-Codes/Secret-Code, for the iPhone are relevant.
*#06# Displays your IMEI on your iPhone. *3001#12345#* To get your access to the field test mode of iPhone. *#30# Thus, you can check whether the caller identification (Clip-function) in the iPhone is active.
*#43# Call Waiting Status *43# Activate a waiting #43# Deactivate waiting
Change PIN1: **04* old PIN * new PIN * new PIN # Change PIN2: **042*old PIN * new PIN * new PIN #
*#746025625# SIM Clock Stop Mode Whether your SIM card the SIM Clock Stop mode supported, you can find out with this code. The iPhone will then idle at the SIM card, ie no calls, etc., all activities on the SIM card. This has a positive effect on power consumption and prolongs battery life.
*3370# EFR mode Enhanced Full Rate improves voice quality, but slightly reduced battery life. #3370# ERF OFF mode
*4720# Half Rate (HFR) on Opposite of ERA. #4720# Half Rate (HFR) off
*21# Call divert a #21# Call divert from **21* destination number # number programmed ###21 deletes the call transfer is complete.
*#21# Call Forwarding Overview
**61* destination number ** (Time 5 to 30 seconds) # divert after 5 to 30 seconds to ring *61# Activate divert #61# Call divert Disabled ##61# Deletes Diversion *#61# Call divert status
**62* destination number # redirection in unattainability *62# Turning #62# Off ##62# Clear *#62# Status
**67* destination number # for Divert if busy *67# Turning #67# Off ##67# Clear *#67# Status
*31# phone number is transmitted #31# phone number is not transmitted
*#5005*86# Are you the code, it displays the current mailbox settings. *5005*86*# xxxxx Combox mail button on the available (xxxxx = mailbox number)
*646# minutes consumption control
*135# Display Own Phone Number
*33* barring code # Outgoing calls to block the lock code to inquire about her please contact your network operator. *#33 Unlock *#33# Status
*331* barring code # Outgoing calls abroad to block the lock code to inquire about her please contact your network operator. #331* barring code # lift blockade *#331# status
*#5005*7672# SMS- center check Current number of the SMS Center (SMSC) to find out. Each SMSC according to variable cost
*5005*7672*xxxxxxx # SMS Center reactivate (xxxxxxx = SMS center number)[/SIZE][/B]
here is steps 1.activate wifi 2.open safari and add jailbreakme. mod my i.com (Without spaces) 3.slide to jailbreak 4.run cydia and add 'sinfuliphonerepo.com as source and download package 5.install ultrasn0w from package 6.reboot device
first you need to upgrade first your hackable psp (2000 and older) to v5.00-m-33
using helcat's recovery flasher..
ok here's how
1.download helcat's recovery flasher then connect your psp to your pc and extract helcat's to MMC / PSP / GAMES
2. download official sony psp firmware v5.00 then extract to root directory of your MMC
disconnect psp to your pc and go to GAMES then open HELCAT"S RECOVERY
choose i agree and take me to the software
choose install CFW of version set above
choose reset/format setting as well
after the selection or setting your psp is now on flashing mode
wait untill flashing is finish and just simply press any key
power on psp again and check your psp system information
now you have version 5.00 m-33
and now lets proceed to version 5.50 GEN-D
3. download version 5.50 GEN-D (check the download link in above of this thread)
connect psp to your pc then extract version 5.50 GEN-D to root directory of your MMC
now disconnect your psp to your pc and go to games and run quick updater version 5.50 GEN-D
choose the first option
your psp will go to flash mode again
after flashing press X to reboot
after rebooting check your psp system information
4. last and final step
download version 5.50 GEN-D2
connect your psp again to your pc then extract version 5.50 GEN-D2 to the root directory of your MMC
after extracting go to games and run QUICK UPDATER 5.50GEN-D2
now press X botton to start patching
and wait untill its done
reboot your psp and check your system information again