I have what's probably a unique situation, though I hope not. For background info, I bought two I747s, one white and one blue, each with issues, but I intended to put parts together to end up with one good one.
When I did a factory reset on the blue one via the recovery menu, it returned a bunch of errors along the lines of "failed to mount /data." Then when it rebooted it would hang on the Samsung logo. Back in recovery mode it returns more of the same errors just booting into recovery mode, and factory reset still returns more of the same errors and doesn't fix anything. I flashed 4.3 with Odin in an attempt to fix it, but I got the boards mixed up, and that one had 4.4 on it, not 4.1 like I thought. I'm pretty sure it's hard bricked now (that whole can't downgrade thing) because it's unresponsive to everything. Though my computer does recognize that it's plugged in, more on that later.
So I figured, fine, I screwed up, I'll just use the other board with 4.1 on it from the white phone. Except when I did a factory reset on that one, it did the exact same thing! Same errors, same problem stuck at the Samsung logo. Except this time I'm not flashing sh*t until I know exactly what I need to do to fix it. In another post where the guy had the same issue with 4.1.1, it was solved by flashing 4.3 with Odin. And another post where the guy had no idea what version he had, he just knew it was lower than 4.3, his problem was also solved by flashing 4.3, But since my last efforts failed miserably, I'm very reluctant to try it until I get some knowledgeable input. I don't remember exactly which version is on there, it's 4.1.something. I'd also prefer not to upgrade beyond 4.1 because I'd like to unlock it and from what I'm reading you can only do it for free if you're on 4.1. So I guess I need a link to an Odin flashable 4.1 package?
As for the poor blue phone that used to have 4.4.something, and was mistakenly flashed with 4.3, I've heard about JTAG but I don't quite understand it, and I'm not sure it would work in my case since a lot of what I'm reading says that bricking which occurs from downgrading is often unfixable. However, Windows recognizes that a device is plugged in when I attach it via USB. It shows up in the Device Manager as QHSUSB_DLOAD. I am currently researching more on this and the method of booting from an SD card, except I don't have an SD card reader at the moment.
Any assistance, advice, links, information, and plain ole encouragement are always welcome and appreciated.
When I did a factory reset on the blue one via the recovery menu, it returned a bunch of errors along the lines of "failed to mount /data." Then when it rebooted it would hang on the Samsung logo. Back in recovery mode it returns more of the same errors just booting into recovery mode, and factory reset still returns more of the same errors and doesn't fix anything. I flashed 4.3 with Odin in an attempt to fix it, but I got the boards mixed up, and that one had 4.4 on it, not 4.1 like I thought. I'm pretty sure it's hard bricked now (that whole can't downgrade thing) because it's unresponsive to everything. Though my computer does recognize that it's plugged in, more on that later.
So I figured, fine, I screwed up, I'll just use the other board with 4.1 on it from the white phone. Except when I did a factory reset on that one, it did the exact same thing! Same errors, same problem stuck at the Samsung logo. Except this time I'm not flashing sh*t until I know exactly what I need to do to fix it. In another post where the guy had the same issue with 4.1.1, it was solved by flashing 4.3 with Odin. And another post where the guy had no idea what version he had, he just knew it was lower than 4.3, his problem was also solved by flashing 4.3, But since my last efforts failed miserably, I'm very reluctant to try it until I get some knowledgeable input. I don't remember exactly which version is on there, it's 4.1.something. I'd also prefer not to upgrade beyond 4.1 because I'd like to unlock it and from what I'm reading you can only do it for free if you're on 4.1. So I guess I need a link to an Odin flashable 4.1 package?
As for the poor blue phone that used to have 4.4.something, and was mistakenly flashed with 4.3, I've heard about JTAG but I don't quite understand it, and I'm not sure it would work in my case since a lot of what I'm reading says that bricking which occurs from downgrading is often unfixable. However, Windows recognizes that a device is plugged in when I attach it via USB. It shows up in the Device Manager as QHSUSB_DLOAD. I am currently researching more on this and the method of booting from an SD card, except I don't have an SD card reader at the moment.
Any assistance, advice, links, information, and plain ole encouragement are always welcome and appreciated.
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