G4 dead (really) after downgrade

[Venimus]

Hi,
I spent 6-7 hours of reading all kind of suggestions and etc, how to bring a brick to life. the only closest to my situation is http://forum.xda-developers.com/showthread.php?t=295623
I flashed my phone several times and i hadnt much of problems until i tried to put wm6 update.
The last time I tried to downgrade to CUSTOM__RUU_Wizard_1050412_WWE_101_11210_WWE and the phone freezed to the start screen (that picture with the beer). I restarted it several times but it never went beyond it.
Then I tried to put the previous ROM that worked. I entered bootload mode and started the upgrade wizard. I waited it to finish, but it didnt! When it reached 98% it suddenly got back to 95%(!?) and after few seconds a message for connecition interupted appeared on the computer. The phone stayed on 95% for some time more and nothing happened. Then i clicked on the "how to restore" button of the upgrade wizard. I followed the instructions which stated on step 3 "remove the battery of the phone".

After I did that, my phone died and since then i cant do anything with it. The screen is all black. Of course I tried hard reset, bootloader mode and etc - all failed. It doesnt go into bootloader mode or do hard reset. The computer does not detect any USB connections. The charger doesnt appear to be detected by the phone (LED doesnt light up). There should be 50-60% battery power left. It was working perfectly before flashing.

I think the main problem now is how to enter the Bootloader.
Im not quite familiar with SD flashing, but i think i have the necessary hardware, just please advise is it possible and how I can do it.

Edit: Now I found that my SD card is unreadable too :(
:eek:
Please help

[samy.3660]

Greetings,
Sorry for your situation, but do you have G4 or G3 wizard.
If G4 was it CID locked or unlocked.

[Venimus]

Greetings,
Sorry for your situation, but do you have G4 or G3 wizard.
If G4 was it CID locked or unlocked.

it is g4 cid locked
edit: i now remember that IPL & SPL had different versions like 1.x & 2.x after downgrading. I didnt know that I have to reflash in that case :( i found it in the forum too late

[CAnnabYS]

You should have read more before trying to flash your phone...
That downgrade that you made bricked your phone. That ROM was intended for G3 ONLY. If you have a G4 you should flash only G4-ROMS (or read how to extract ipl & spl from a G3 ROM) ... I am afraid there are no known solutions, because IPL and SPL on a G4 can`t be succesfully upgraded/reflashed (the hardware doesn`t allow that)

[Venimus]

(the hardware doesn`t allow that)
so how i did broke them in the first place?
anyway i'm trying to cook a SD card image, but the typhoon 5 tool doesnt convert the files to sd image format
C:\work>typho5.exe -r ipl=nk.nbf -d az.img
read 04741800 for ipl from nk.nbf
no IPL at 4 in IPL image

my idea is to either get a packeded file with all the modules or put them to the SD card one by one at the appropriate offset as it is described in the Wiki (using the winhex disk editor). Is the *.nb format the same as the modules in the SD card image? I mean can i directly paste the contents of the .nb files into the apropriate offset to the empty SD card?

[mestrini]

Your only solutions are to get a new board or to get a JTAG device and discover the JTAG pins on the board since it's the only way you can access the flash chip without a bootloader. Problem is until now no one has managed to find the JTAG pins (or bothered).

What you have done was flashing an IPL (Initial Program Loader) that is for G3 DOC chips only (with a 130 nm manufacturing process) ; and since you have a G4 DOC chip (90 nm manufacturing process) the process fails.

This is the IPL:
A small XIP memory (ROM, NOR flash or DiskOnChip boot block) that contains code to
perform minimal system initialization: It must at least initialize the chip-select unit so that
the ROM (if any), RAM, and DiskOnChip can be accessed.3.2. The Boot Process
• Power up and initialization: After system power up, the IPL code that resides on the XIP
block of the DiskOnChip is executed. The IPL code initializes the DiskOnChip controller
and the RAM.
• Copying the SPL code from DiskOnChip to RAM: After initialization, the IPL reads and
loads the SPL code from the DiskOnChip binary partition to RAM. It then jumps to the SPL
start address in RAM and executes the SPL.
Notes: 1. In general, the IPL is limited in size to several KB (the size limitation varies,
depending on the device type), so it is not possible to include both the system
initialization code and the error correction code. The absence of the error correction
code in the IPL is the reason why the boot process is divided into the IPL stage and
SPL stage. The actual loading of the OS image to RAM is done by the SPL code.
Since the SPL runs in the system RAM, there is no limit on code size and it can
include the error correction code.

As you can see on step 2 the IPL can't load SPL since they are for different chip versions.

cheers

[Venimus]

Your only solutions are to get a new board or to get a JTAG device and discover the JTAG pins on the board since it's the only way you can access the flash chip without a bootloader. Problem is until now no one has managed to find the JTAG pins (or bothered).

What you have done was flashing an IPL (Initial Program Loader) that is for G3 DOC chips only (with a 130 nm manufacturing process) ; and since you have a G4 DOC chip (90 nm manufacturing process) the process fails.

This is the IPL:


As you can see on step 2 the IPL can't load SPL since they are for different chip versions.

cheers

yes, it seems that happened, but after flashing the g3 version, the phone still enters the bootloader. It died completely AFTER i tried to return the g4 version, and may be all happened because it didnt finish the instalation (which interupted for no reason) and stayed with messed up versions.
Anyway seems I need a new mobo, but i'm not sure i could find it here (i'm from Bulgaria) the closest vodafone store is in Romania. The phone is from Germany, a friend of mine bought it there.