Recently I've got Amazon Kindle Fire HD 7"
It comes at 11.3.2.1 stock rom, which still have not root exploit.
Guided by useful Gran PC's post, i've rooted this device, and boot to normal mode ok.
After that, I decide to flash CM 10 from this thread
After step 5, device going to reboot, but never wakes up again. Nothing happends when I press power, long or short.
I sure i've checked all md5, device was fully charged, I use working fastboot cable.
Anyway, I've got my KFHD7 hard bricked.
There nothing at all: device not detected on USB bus (dmesg say nothing), does not show anything on screen.
I know there is a way to recover such a dead devices by reflashing them. I read same topic for unbrick KF2 and realize that is not a hard work.
So, I open my kindle and discover that:
* CPU unit works (heat a little) till I disconnect battery.
* Flash (data storage + controller) implemented at SanDisk SDIN8DE4-16G chip dataseet avaliable
* chip has low work pin count, but BGA packaging, so it hard to remove&install
* There is 6 test pads near this iNAND chip (this can be DAT0..DAT3 + CMD + CLK signals) + 1 test pin near (image attached)
* There is unsoldered: debug connector (5 pins), reset button pad, USB boot button pad
I soldered MMC side of reader, but not pretty sure which pins I should choose at board.
6 pads near NAND may be MMC interface, I take big photo(attached), but signs are illegible.
Look like names: TP1486, TP1487.
Two pins have 1.8V when device powered: 1st and 5th from left to right, others have 0.
Anyone have information about:
* This nand chip reading via SD card adopter (it's implements MMC, i'm pretty sure it's possible)
* Test pin pads pinout and MMC pinout
* Using debug/usb boot to recover
PS: I have oscill/soldering station/exp/microcontrollers to work, but additional information required.
PPS: Latest thing I want to do is rebolling this chip (e.g removing&installing).
It comes at 11.3.2.1 stock rom, which still have not root exploit.
Guided by useful Gran PC's post, i've rooted this device, and boot to normal mode ok.
After that, I decide to flash CM 10 from this thread
After step 5, device going to reboot, but never wakes up again. Nothing happends when I press power, long or short.
I sure i've checked all md5, device was fully charged, I use working fastboot cable.
Anyway, I've got my KFHD7 hard bricked.
There nothing at all: device not detected on USB bus (dmesg say nothing), does not show anything on screen.
I know there is a way to recover such a dead devices by reflashing them. I read same topic for unbrick KF2 and realize that is not a hard work.
So, I open my kindle and discover that:
* CPU unit works (heat a little) till I disconnect battery.
* Flash (data storage + controller) implemented at SanDisk SDIN8DE4-16G chip dataseet avaliable
* chip has low work pin count, but BGA packaging, so it hard to remove&install
* There is 6 test pads near this iNAND chip (this can be DAT0..DAT3 + CMD + CLK signals) + 1 test pin near (image attached)
* There is unsoldered: debug connector (5 pins), reset button pad, USB boot button pad
I soldered MMC side of reader, but not pretty sure which pins I should choose at board.
6 pads near NAND may be MMC interface, I take big photo(attached), but signs are illegible.
Look like names: TP1486, TP1487.
Two pins have 1.8V when device powered: 1st and 5th from left to right, others have 0.
Anyone have information about:
* This nand chip reading via SD card adopter (it's implements MMC, i'm pretty sure it's possible)
* Test pin pads pinout and MMC pinout
* Using debug/usb boot to recover
PS: I have oscill/soldering station/exp/microcontrollers to work, but additional information required.
PPS: Latest thing I want to do is rebolling this chip (e.g removing&installing).
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