New USB JIG version needed?

[iL_FeD]

Hi,
Something strange happened with my phone yesterday and I think it is worth sharing.

The Problem: I have an old USB JIG I made by myself about one year ago for using it with the Samsung Galaxy S (GT-I9000), it works like a charm for entering into download mode. But when I bought the SGS2 (GT-I9100) I noticed it didn't work, so I searched the forum and read that the new bootloader prevents it from working and erasing flash count or removing the infamous yellow triangle.

I know this have been addressed by other means. But yesterday my phone started acting weird and it turned out to be a problem in the phone's USB port making some sort of short circuit (Explanation in this thread, I'm not the only one: http://forum.xda-developers.com/showthread.php?t=1216163).

The funny part is that, when the phone was not working well, I had to remove the battery because it was unusable. And when I put the battery back, withouth touching any button, the phone started on download mode with a legend saying that the flash count has been erased, I rebooted the phone and the yellow triangle was gone also!

The point of my post is that something in the USB port made the phone think it had some kind of JIG connected which told it to erase the flash count and start the download mode. So I've come to think that there has to be another version of the USB JIG that works with out phone in the latest bootloader version!

I'm not very good with electronics, so I cannot investigate any further, but I leave my doubt in the community just in case someone wants to do some more research.

Hint: When this happened, the phone kept showing the car home icon in the status bar as if it was connected to some kind of dock

I hope this helps!

 

[bpivk]

What rom were you and and did you flash the old bootloader at any time since you were using your phone?

 

[rocky23]

yeah the old jig only took my phone to down mode thts it,but yes defo the fun i had is sparking the pins like wires + an _....lolyes i think ur right ,thers gota b an otha verson

 

[iL_FeD]

What rom were you and and did you flash the old bootloader at any time since you were using your phone?

I9100UHK1 - Latest 2.3.4 unbranded for my country, the old JIG we all know doesn't work and no, I've never flashed the old bootloader, I was staring to become friends with the yellow triangle until it faded away

 

[MistahBungle]

Flash the old bootloader, use the jig, flash the new bootloader again if you need to. Simple.

However, I recall seeing posts on here in November/December about a new USB jig that worked with the new bootloader. Don't know how that ended up or whether anyone had gotten hold of one of these (if they exist).

Edit to add - I've just sent the person I was discussing this 'new jig' with a couple of months ago a message to see if these things exist or not. I'll post here when I know either way.

 

[iL_FeD]

Flash the old bootloader, use the jig, flash the new bootloader again if you need to. Simple.

However, I recall seeing posts on here in November/December about a new USB jig that worked with the new bootloader. Don't know how that ended up or whether anyone had gotten hold of one of these (if they exist).

Edit to add - I've just sent the person I was discussing this 'new jig' with a couple of months ago a message to see if these things exist or not. I'll post here when I know either way.

I know that flashing the old bootloader works, but the point of the thread is precisely that there must be another version of the JIG because the phone reseted the flash counter by itself because of the USB port problem, even though it has the new bootloader

 

[fdbailes]

using same firmware some time ago when i bought my phone, i try to use usb jig with the new bootloader, but never happened what you said to me, i have to flash the oldbootloader, but if you're not the only one, that,s strange

 

[tsinc]

I think noone understands. He managed to see the factory mode screen and erase the counter while having the new bootloaders (without a JIG, maybe shortcircuit). Can we suppose that a different JIG can activate this with the new bootloaders?

Edit: Sorry, MistahBungle seems to get it

 

[iL_FeD]

I think noone understands. He managed to see the factory mode screen and erase the counter while having the new bootloaders (without a JIG, maybe shortcircuit). Can we suppose that a different JIG can activate this with the new bootloaders?

Edit: Sorry, MistahBungle seems to get it

Exactly! maybe I didn't manage to give a good explanation.

By the way, I've seen that screen three different times while the problem on the phone existed, so It's not just a concidence, there HAS to be a new JIG version, we just need to figure out. I'm guessing that we need to short circuit some cable with resistors like the original JIG, maybe a different resistance is needed?

 

[alias_neo]

New JIG

I remember over-reading a conversation between Odia ( I think) and someone regarding a resistance-switching JIG that can erase it, but I never caught what exactly was required.

If we can find out I'd like to make one, I might have a play with some rheostats later and see if I can figure it out.

 

[mrm1]

May also have something to do with the order things are done as well. The OP inserted the battery at the time the reset occurred. Maybe switching off alone is not enough but a new jig needs installing with the battery out, then the battery replaced.

Sent from my GT-I9100 using Tapatalk

 

[pulser_g2]

I remember over-reading a conversation between Odia ( I think) and someone regarding a resistance-switching JIG that can erase it, but I never caught what exactly was required.

If we can find out I'd like to make one, I might have a play with some rheostats later and see if I can figure it out.

That conversation will help you.

 

[akbarhash]

That conversation will help you.

Basically this is what I remember when a firmware is being flashed the USB cable should have the same resistance on the same pin as the jig now.

Sent from my GT-I9100

 

[MistahBungle]

OK. Allegedly (and I can't emphasise this enough), this works with the 'new' bootloader on the SGS2. Yes, I realise the description/title says I9000, I'm just relaying what I was told by someone else (who hasn't bought/tried one of these BTW).

I guess it's a case of who in this thread can't be arsed flashing the old bootloader or using Triangle Away & wants to fork out 2.5 quid to test it out.

 

[alias_neo]

That conversation will help you.

It was Chainfire and Odia in CF's TriangleAway thread, but neither of them actually mentioned what it was, just at hint at it.

Anyone care to share?

 

[mrm1]

OK. Allegedly (and I can't emphasise this enough), this works with the 'new' bootloader on the SGS2. Yes, I realise the description/title says I9000, I'm just relaying what I was told by someone else (who hasn't bought/tried one of these BTW).

I guess it's a case of who in this thread can't be arsed flashing the old bootloader or using Triangle Away & wants to fork out 2.5 quid to test it out.

I have one of those cables and can confirm, it does NOT work on the new boot loader.

 

[MistahBungle]

Thanks That rules that bit of kit out then.

I have one of those cables and can confirm, it does NOT work on the new boot loader.

 

[rwc3b]

I suppose by using mobile odin to flash we'll never need a jig again?

Sent from my GT-I9100 using xda premium

 

[notanoob]

I suppose by using mobile odin to flash we'll never need a jig again?

Sent from my GT-I9100 using xda premium

I guess with chainfires hot fix you would not need mobile odin or jig ... if sammy keeps as they are in there future releases of ICS

 

[iL_FeD]

Just to clear things up
The original JIG does not work on the latest bootloader. My state is that there may be a new version of the JIG which may work based on what I've found.

I know there are many methods like flashing the old bootloader, using Triangle Away, or flashing by mobile odin, I just opened this thread in order to share something I have found by mistake on my phone and maybe useful for others.

When I first made the JIG for the original SGS was because the device had download mode disabled and the only way to access it was by calling 'adb reboot download'. But then a flashing procedure failed and all that could save the brick was the JIG. I know this is not the case with the SGS2 but I thought it may be interesting to share and investigate