[How To] Check if you can Unlock

**Simon** · 11-20-2010, 04:04 PM

There are a few ways that you can check if you can unlock. First thing is to check what baseband/modem firmware you are on:

1: Go to settings-general-about and and scroll down until you see modem firmware.

or

2: Download f0recast from here: iH8sn0w.com | Jailbreak your iPod touches and iPhones. Run it with your phone connected and it will tell you what baseband you have.

or

3: Download Tiny Umbrella from here: The Firmware Umbrella - TinyUmbrella. Run it and click on your phone, you should see it under "installed baseband".

Use #2 or #3 if you are at the emergency screen and cannot access the phone.

Once you know what your baseband is you can check here if it can be unlocked:

iPhone 3G/3GS

Baseband Firmware Unlock

4.26.08 3.0/3.0.1 Yes (Ultrasn0w)
5.11.07 3.1/3.1.2 Yes (Ultrasn0w/blacksn0w)
5.12.01 3.1.3 Yes (Ultrasn0w)
5.13.04 4.0/4.0.2/4.0.3 yes (Ultrasn0w)
5.14.02 4.1 None *See below on how to unlock if here
5.15.04 4.2.1 None *See below on how to unlock if here
5.16.01 4.3 None *See below on how to unlock if here
5.16.02 4.3.X None *See below on how to unlock if here
5.16.05 5.0/5.0.1/5.1/5.1.1 None *See below on how to unlock if here
6.15.00 Custom Firmware or redsnow method yes (Ultrasn0w)

iPhone 4

Baseband Firmware Unlock

1.59.00 4.0/4.0.1/4.0.2 Yes (Ultrasn0w)
2.10.04 4.1 Gevey Sim
3.10.01 4.2.1 Gevey Sim
4.10.01 4.3.X Gevey Sim
4.11.08 5.0/5.0.1 None
4.12.01 5.1/5.1.1 None

iPhone 4S

1.0.11 5.0 Gevey ultra s
1.0.13 5.0.1 Gevey ultra s
2.0.10 5.1 Gevey ultra S

Baseband Cannot be downgraded unless you have a iPhone 3G that has a 5.8 bootloader. f0recast/tiny umbrella can tell you if you do. If you are lucky enough to have this then you can use Fuzzyband in cydia to downgrade your baseband.

To check up to the minute release info on unlocks check here:
Dev-Team Blog
MuscleNerd (MuscleNerd) on Twitter
sherif hashim (sherif_hashim) on Twitter

Important For Unlockers

Baseband can be preverved when updating two ways:

1. Restoring to custom firmwares made with pwnage tool or sn0wbreeze. Tutorials can be found here::
For 4.1
iClarified - iPhone - How to Jailbreak Your iPhone 3GS Using PwnageTool (Mac) [4.1] iPhone 3GS Pwnage Tool (Mac)
iClarified - iPhone - How to Jailbreak Your iPhone 3G Using PwnageTool (Mac) [4.1] iPhone 3G Pwnage Tool (Mac)
iClarified - iPhone - How to Jailbreak Your iPhone 4 Using PwnageTool (Mac) [4.1] iPhone 4 Pwnage Tool (Mac)
iClarified - iPhone - How to Jailbreak Using a Custom Restore IPSW and RedSn0w (Windows) Redsn0w & Pwnage Tool Use if you don't have a Mac but dont want to use Sn0wbreeze. You will need to obtain a pwnage tool made custom firmware yourself. We cannot post links to custom firmware here. Google is your friend. (Windows)
HOW TO: Jailbreak iOS 4.1 with Sn0wbreeze 2.1 Sn0wbreeze (Windows)
(note sn0wbreeze has some issues on iPhone 3G right now so a pwnage tool custom firmware should be used for them.)

For 4.2.1
Mac
iPhone 3GS iClarified - iPhone - How to Jailbreak Your iPhone 3GS Using PwnageTool (Mac) [4.2.1]
iPhone 4 iClarified - iPhone - How to Jailbreak Your iPhone 4 Using PwnageTool (Mac) [4.2.1]
Windows
HOW TO: Use Sn0wbreeze To Untethered Jailbreak iOS 4.2.1 [video] | FSMdotCOM

2. Using Tiny Umbrella to preserve baseband during restore. This method only works on iPhone 4. Do not attempt with any other iDevice. Tutorial can be found here:
Windows: iClarified - iPhone - How to Update Your iPhone 4 Without Upgrading the Baseband (Windows) 4.3.1
Mac: iClarified - iPhone - How to Update Your iPhone 4 Without Upgrading the Baseband (Mac) [4.3.1]

For 4.3.X
Mac
iPhone 3GS: iClarified - iPhone - How to Jailbreak Your iPhone 3GS Using PwnageTool (Mac) [4.3.1]
iPhone 4: iClarified - iPhone - How to Jailbreak Your iPhone 4 Using PwnageTool (Mac) [4.3.1]
Windows
Sn0wbreeze Updated To v2.5 To Untethered Jailbreak iOS 4.3.1 [Windows] | FSMdotCOM

For 5.0.1

Mac: http://www.iclarified.com/entry/index.php?enid=17344
Windows: http://www.iclarified.com/entry/index.php?enid=18932

For 5.1

Mac: http://www.iclarified.com/entry/index.php?enid=20512
Windows: http://www.iclarified.com/entry/index.php?enid=20516

For people stuck on Baseband 5.14.02/5.15.04/5.16.01/5.16.02/5.16.05

There is a way for you to unlock now using a method of updating your baseband with a custom firmware made with pwnage tool or by using redsnow to update the baseband for you. For full info using this method read here VERY carefully (especially the part about loss of GPS): Dev-Team Blog

DO NOT attempt this if you have a 3GS with a serial number XX135 or later. The one stands for 2011 and the 35 for week 35. So 3GS's made after week 35 of 2011 cannot install the iPad baseband. This should be just the 8gb version 3GS as they were the only ones being made at that point I believe.

Tutorials for using pwnage tool to update baseband so that you can unlock can be found here:
iPhone 3G: iClarified - iPhone - How to Jailbreak and Unlock Your iPhone 3G Using PwnageTool (Mac) [4.2.1]
iPhone 3GS: iClarified - iPhone - How to Jailbreak and Unlock Your iPhone 3GS Using PwnageTool (Mac) [4.1]

Redsn0w method:
HOW TO: RedSn0w 0.9.6b5 To Unlock Your iPhone 3G/3Gs With Tricky New Ultrasn0w [Mac & Windows] | FSMdotCOM

Unlockers should use custom firmware or Tiny umbrella method (iPhone 4 only) 99% of the time when updating/restoring. The only exception is when it is confirmed that the latest firmware has a baseband that can be unlocked. (Thx blkcadi & Mes

)

**eyeRobot** · 11-20-2010, 09:23 PM

Good post. Hopefully reduce the number of threads on this subject (but I doubt it).

**i.Annie** · 11-20-2010, 10:17 PM

Nice job. Stickied. I hope you don't mind me asking, could you edit it and bold the #1,2, and 3? I was reading it and was struggling to find when you said use #2 and #3. Just bold the numbers

**Simon** · 11-20-2010, 10:21 PM

Thanks, definitely don't mind Annie. Constructive criticism is always appreciated

**i.Annie** · 11-20-2010, 10:27 PM

Lol, nah thank YOU. I've been wanting to write something like this but I haven't had the time. But now I don't have to! Haha.

**Simon** · 11-20-2010, 10:29 PM

**Mes** · 11-20-2010, 10:39 PM

Excellent x98car. Will use this link instead of typing (haha

**Simon** · 11-20-2010, 10:40 PM

Lol, thats kinda the same reason I did it

**blkcadi** · 11-20-2010, 11:56 PM

3Gs can be unlocked at 4.1 with a custom firmware maintaining the baseband and use ultrasn0w I thought....mmmmmmmmmmmmmm

**iPhoenix3g** · 11-21-2010, 12:01 AM

Originally Posted by blkcadi

3Gs can be unlocked at 4.1 with a custom firmware maintaining the baseband and use ultrasn0w I thought....mmmmmmmmmmmmmm

Yeah I thought so too ...

**i.Annie** · 11-21-2010, 12:02 AM

That would be correct B

I think this just covers for the newbies who don't know if the current basebands they are on are unlockable or not.

**Mes** · 11-21-2010, 12:04 AM

x98car ... Something useful to add based upon blkcadi's comment: Unlockers need to use 'custom firmware' --- almost all of the time.

**i.Annie** · 11-21-2010, 12:04 AM

Originally Posted by iPhoenix3g

Yeah I thought so too ...

It can. This thread just covers what baseband comes with which firmware. Using a custom firmware will preserve baseband to maintain unlock, so it doesn't necessarily mean you can't be on 4.1 and be unlocked. Just means if you're already on stock 4.1, the baseband that came with it is not unlockable at this time.

**blkcadi** · 11-21-2010, 12:05 AM

lolz, n00bs, gotta love 'em. We all n00bs at one time.

**i.Annie** · 11-21-2010, 12:07 AM

I love how you just laughed at noobs

**blkcadi** · 11-21-2010, 12:09 AM

Sorry x, didn't mean to rain on your parade. lolz

Originally Posted by puma.leaf

I love how you just laughed at noobs

You know meh, I love to laugh, but as you know, some of the posts we get from n00bs just have to go in the record book.

Sorry to hi-jack the thread, back on topic dammit.................

**i.Annie** · 11-21-2010, 12:11 AM

You are awful lol. Thread hi-jacker...

**Simon** · 11-21-2010, 12:17 AM

Lol, ya as puma/Annie said I was just putting what baseband comes with each stock firmware. I will add a bit to the end saying how custom firmware (and tiny umbrella on iPhone 4) can preserve baseband...in the morning

.

**DevouredDreams** · 11-21-2010, 12:29 AM

every single one of us have our noob moments

**eyeRobot** · 11-21-2010, 01:39 AM

Is Puma.leaf the new Annie? Well I never....

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