doesnt matter
same process

okay....thx for your support for now, i tried at least 30 times now in different ways, enough is enough :-)

@fahadj2003: Thank you for the attempts to help, although like I said in my case, whatever you do, the eMMC is simply not detected (in multiple versions of Windows and Fedora, I might add - thus the need to go to Ubuntu for a second try).

It just gets stuck in the loading screen (and what's different from the guy in the link you posted, it gets stuck for HOURS WHILE the dots are STILL MOVING, and it's not stuck on the second dot). I have tried popping out battery and popping in back again during the eMMC process, with or without pressing "u".

And yet, a few days before, I could reflash everything without even a single problem. Similarly, a few weeks before that. Something went wrong somewhere along the line.

Anybody has a rootfs image with the loading bars turned off and verbose boot mode turned on? Maybe that might help me to figure out which part is going wrong.

Again, like I said, will go to Ubuntu for another try. Something tells me my Windows drivers (in both Windows versions) are sorta toasted (as they have been ever since I installed Ovi Suite), and maybe that's causing this issue to reflash eMMC. Doesn't explain why the reflash on Fedora failed though.

@dammie: Well, keep on trying mate. On a side note, have you tried restarting your COMPUTER instead? Sometimes that sorts out the driver issues.

I'm guessing that, like you said, the eMMC has died or failed in some way.
One last suggestion I can come up with is that I can send you a copy of -my- working RootFS and OptFS images, and you can try flashing the RootFS with the Flasher, booting into my tool(doesn't require OptFS to boot that far), and flash OptFS through that.
This has a chance of working, but is in no way guaranteed.

If this fails, you are going to have to look into alternate/custom OS stuff - Think mounting your RootFS image, editing /etc/fstab, and changing the /opt/ partition from the eMMC to a partition on the SD card.
As the RootFS is still intact, you can probably do this and get your N900 working again this way, but you may have lost part, or all, of the eMMC.

@RobbieThe1st: Thanks, a rootfs with a working copy of your flasher tool would be much appreciated - I wiped it out the moment I reflashed to the stock PR1.2 fiasco.

But really, I'm thinking more of sending it to be repaired (at a cost) to the local Nokia distributor/service agent. But if it can be revived through any other means (however unlikely as that may be), the better.

As of now, chances look slim though. And booting from SD card sounds like a dodgy solution from a long term point of view.

Okay, now that we've kinda established that the eMMC might be dead, let's move on to discussing WHY, shall we?

Reasons I could think of:
1) OC related write errors (Can eMMCs/flash memory in general get bad sectors? I thought that was a HDD related problem).
2) OC related voltage issues (Was running it undervolted, but isn't that only CPU/DSP related?).
3) Me zapping the chip with static when I opened her up.

Anybody else?

@eiraku, I think your eMMC has been crashed. try reformatting it then scan/fix it in windows. there you check if it has bad sectors.

I'm uploading it to my Gmail right now, PM me your email and I'll forward it to you(120MB, zipped).

Yes, in fact flash is generally shorter-lived than HDDs, at least in write-life: HDDs have theoretically unlimited writes, whereas Flash have a limited life of 10,000-1,000,000 times, depending on design etc.

Probably a solder-joint got loose, or simply you had a "weak" chip - something happened and a bit of it that was "iffy" but working simply failed.

My gut feeling, which may be wrong, is that you could send your N900 to a number of people here at this site and they could fix it. I don't think it's dead. But I'm not offering to take it.

Just a quick bump to an old topic for an update. My local Nokia Care has - after nearly 2 week long wait - called me up to inform me that my N900 was truly and irreversibly dead.

To the point of being non repairable.

Lol, guess I'm one of the few people who completely killed their N900s out of overuse.

So...
... do you still need your otterbox?!

I'm sorry... couldn't resist

Will you get a new device, or did you tell them about OC and so on, so that you won't get a new one on warranty?