What is wrong? - Cont

[Leon Pollak]

Meanwhile, some more inputs:

First, to remind, the scenario:
After the first burning (from withing U-Boot), the NAND is write 
protected by HW and the partition is mounted as RO.
At some moment I need to update a small file. 
So I do: 
- HW write protect off, 
- remount RW, 
- update file, <---- The main point  <----
- sync, 
- remount RO, 
- write protect on.
At this moment, the console is full of error messages - crash or a lot 
of "Erase at 0x..... failed immediately: errno -5".
-------------------------------

Now two more test cases:

1. After burning JFFS2 from U-Boot and STILL WITHOUT working from flash, 
I boot into NFS, mount the partition as RW, keep it for 3-5 seconds and 
reboot into flashes.
This works FINE, updating passes silently, no crazy messages and/or 
crashes.

2. I added to the partition a flag file "first_time.dat" and in rc3.d 
added script:
if [ -e first_time.dat ] ; then
    'HW unlock flash'
    mount -o,remount,rw /home
    sleep 20
    mount -o,remount,ro /home
    'HW lock flash';
    rm first_time.dat
fi
Against my hopes, this DOES NOT helped. Crashes and messages appeared as 
"usual"....


Any help will be highly appreciated.
-- 
Leon