Check iPhone 3GS BootRom (Windows, Mac)
In this guide you’ll learn how to check iPhone 3GS bootrom whether its new bootrom [iBoot-359.3.2] or old bootrom [iBoot-359.3.2]. We are going to cover how to check bootrom version of iPhone 3GS in both the Windows and Mac OS X.

Why to Check BootRom?
There are two types of BootRom in iPhone 3GS. Older iPhone 3Gs comes with Old BootRom [iBoot-359.3] while the newer units of iPhone 3GS has New BootRom [iBoot-359.3.2]. Old BootRom is vulnerable to jailbreak exploit but there’s no jailbreak exploit found in New BootRom so far. So, it’s important to know your BootRom version prior to jailbreak.
iPod Touch Users
- iPod Touch 3G and iPod Touch 2G users are also affected by this. However, you can confirm the jailbreak just by checking your iPod Touch model.
- All iPod Touch 3G on iOS 4 cannot be jailbroken ATM.
- To confirm if your iPod Touch 2G (MC) is jailbreakable or not, check the iPod Touch model. If it starts with MC then you cannot jailbreak iOS 4 on your iPod Touch 2G. Only Non-MC models are vulnerable to jailbreak exploit. You can check iPod Touch model by going to: Settings > General > About > Model
How to Check iPhone 3GS BootRom (iBoot)
- Old BootRom: iBoot-359.3
- New BootRom: iBoot-359.3.2
Check iPhone 3GS BootRom (iBoot) in MAC OS X
Here are the steps to check bootrom (iBoot) version of iPhone 3GS in Mac OS X.
Step 1
Connect your iPhone 3GS to your computer and put it into DFU mode. (How to: Put iPhone into DFU Mode)
Step 2
Go to Apple Menu (Top-Left) and select About This Mac. Then hit the More Info button.
Step 3
Select the USB listed under Hardware from the left navigation pane. Then select the Apple Mobile Device (DFU Mode) from the right-top pane. (See the screenshot below)
Step 4
Then scroll down the details pane (Right-Bottom) and locate the serial number field. At the end of the serial number, there’s your bootrom like this: [iBoot-359.3]
***If you have an iPhone 3GS iBoot-359.3 >> Old bootrom.
***If you have an iPhone 3GS iBoot-359.3.2 >> New bootrom.
Check iPhone 3GS BootRom (iBoot) in WINDOWS
Here are the steps to check bootrom (iBoot) version of iPhone 3GS in Windows OS.
There are two ways to check iPhone 3GS BootRom in Windows.
- Using iDetector
- Manually
Using iDetector
Step 1
Connect your iPhone 3GS to your computer and put it into DFU mode. (How to)
Step 2
Download iDetect and run it.
Step 2
Hit the “Is My BootRom Old or New” button. It will tell you if your iPhone 3GS bootrom is Old or the new one.
Manually
Here’s how to check bootrom version manually in Windows.
Step 1
Connect your iPhone 3GS to your computer and put it into DFU mode. (How to)
Step 2
Right Click on My Computer and select Properties. Then Click on the Device Manager from the left side of the screen.
Step 3
Double click to expand the Universal Serial Bus Controllers category.
Then Right click on Apple Mobile Device USB Driver item and click the Properties button.
Step 4
Select the Details tab.
Then select the Device Instance Path from the Properties dropdown menu.
Step 5
Scroll to the right end of the field to locate your iPhone 3GS bootrom version. It should look something like [iBoot-359.3] or [iBoot-359.3.2]
***If you have an iPhone 3GS iBoot-359.3 >> Old bootrom.
***If you have an iPhone 3GS iBoot-359.3.2 >> New bootrom.
Jailbreak iPhone 3GS iOS 4
- How to jailbreak iPhone 3Gs iOS 4 with PwnageTool 4.0
- How to jailbreak iPhone 3GS iOS 4 with Sn0wBreeze 1.6
- How to Jailbreak iOS 4 Firmware
- AppSync 4.0 – Install cracked apps iOS 4
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Tags: BootRom, guide, iBoot, iDetector, iPhone 3GS
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And after I do this, is there anyway to get my phone out of dfu mode, without restoring it?
is it a tethered jailbroken device?
otherwise hold down the both home and power buttons for 10 sec then let got the home button but keep holding the power
Well I upgraded to iOS4 before reading all this, It was jailbroken before, not anymore… so just to get this straight, the procedure to get it into DFU mode also gets it out of it?
Hold down the Home and power for 10 sec.. the let go the home.. keep holding the power
Thanks for the easy instructions to check iPhone 3GS BootRom.
and Yes mine is Old one :p
hey dude,i’m not able to use the idetector. It will say no device found >< What should i do??
did you put it into dfu mode?
yeah i did
I also had no success with idetector in dfu mode, device not found. And I have no device instance path in device manager apple usb properties!
iphone 3GS with original OS 4 8A293 MC133X 05.13.04
Have tried everything and every tool to try to get this mother jb’ed again. Itunes 9.2 won’t restore on old or new pc even though I have blobs saved on saurik’s server. redsnow won’t process any of my ipsw’s.
I figure I have the new bootrom. I sure hope that blackra1n or somebody else can get a release for all phones soon.
Id you’ve 3.1.3 SHSH blobs. Simply downgrade and use Spirit that’s the only solution
Hello,
Before i read this i was already upgraded my iphone into ios4 and before that my iPhone was frozen so i had to upgrade it and remove all the old files, I tried many times to downgrade but everytime am getting an error (3014)and tried all the ways i found on the internet, so is there anyway i can jailbreak it without downgrading my iPhone?? please help me guys,
Sorry for the bad english
Regards,
1.you can downgrade 3GS only if you’ve SHSH blobs saved
2.Wait for the Spirit jailbreak update
I have MC model Iphone 3GS, but when I checked I have old Bootrom. Just out of curiosity, not all MC model will have new bootrom isnt it?
Correct!
MC applies to iPod Touches only
i did the manual with my ipod touch 2nd generation MC model and instead of iboot and all that, it said this: USB\VID_05AC&PID_1281\CPID:8720_CPRV:13_CPFM:03_SCEP:04_BDID:00_ECID:000001EA860DB50C_IBFL:01_SRNM:[9C002A9T75J]
for iPod Touches.. simply check you iPod Touch model..
if it starts with MC it has new bootRom
If i go to DFU-mode can i get it out whit out restoring the device? a simple yes or no plz
holde down.. home+power for 10 sec and then let go home button and keep holding power.. it should turn ur iPhone off..
However if it’s tethered jailbroken.. you must run the tool again to go to home screen