[Galaxy S I9000 Android Development] jerome.d:
Well, it did not work...

First of all, I had a libusb "-3" error. It seemed that libusb needed higher privileges to access my phone.

I therefore tried to run heimdall as root (sudo heimdall-frontend). As I said, I then selected (in the "flash" tab) the pit file from samfirwmare (it is the same for all stock firmwares on the SGS2), then I selected "Kernel" and put the CF-root zImage corresponding.

I then tried to flash, and the libusb error is gone, but I got this

Heimdall v1.3 (beta), Copyright (c) 2010-2011, Benjamin Dobell, Glass Echidna
http://www.glassechidna.com.au

This software is provided free of charge. Copying and redistribution is
encouraged.

If you appreciate this software and you would like to support future
development please consider donating:
http://www.glassechidna.com.au/donate/

Initialising connection...
Detecting device...
Claiming interface...
Attempt failed. Detaching driver...
Claiming interface again...
Setting up interface...

Beginning session...
Handshaking with Loke...

Downloading device's PIT file...
PIT file download sucessful

ERROR: Partition corresponding to -pit argument could not be located
Ending session...
Rebooting device...
Re-attaching kernel driver...

There seems to be a problem with the partition. However, the .pit file I used really seems to correspond to my (stock) firmware. From Heimdall-frontend, with the pit file I have taken, the partition ID for the kernel seems to be "6"; when I run "sudo heimdall print-pit", it also appears that, on my phone, the kernel is on the 6th partition:

Downloading device's PIT file...
PIT file download sucessful

Entry Count: 15
Unknown 1: 0
Unknown 2: 0
Unknown 3: 0
Unknown 4: 0
Unknown 5: 0
Unknown 6: 0
Unknown 7: 0
Unknown 8: 0

--- Entry #0 ---
Unused: No
Partition Type: 2 (EXT4)
Partition Identifier: 0
Partition Flags: 0 (R)
Unknown 1: 0
Partition Block Size: 0
Partition Block Count: 0
Unknown 2: 0
Unknown 3: 0
Partition Name: GANG
Filename: emmc.img

--- Entry #1 ---
Unused: No
Partition Type: 2 (EXT4)
Partition Identifier: 1
Partition Flags: 0 (R)
Unknown 1: 0
Partition Block Size: 0
Partition Block Count: 0
Unknown 2: 0
Unknown 3: 0
Partition Name: BOOT
Filename: boot.bin

--- Entry #2 ---
Unused: No
Partition Type: 2 (EXT4)
Partition Identifier: 4
Partition Flags: 1 (R)
Unknown 1: 0
Partition Block Size: 8192
Partition Block Count: 40960
Unknown 2: 0
Unknown 3: 0
Partition Name: EFS
Filename: efs.img

--- Entry #3 ---
Unused: No
Partition Type: 2 (EXT4)
Partition Identifier: 2
Partition Flags: 0 (R)
Unknown 1: 0
Partition Block Size: 49152
Partition Block Count: 2560
Unknown 2: 0
Unknown 3: 0
Partition Name: SBL1
Filename: Sbl.bin

--- Entry #4 ---
Unused: No
Partition Type: 2 (EXT4)
Partition Identifier: 3
Partition Flags: 0 (R)
Unknown 1: 0
Partition Block Size: 53248
Partition Block Count: 2560
Unknown 2: 0
Unknown 3: 0
Partition Name: SBL2
Filename:

--- Entry #5 ---
Unused: No
Partition Type: 2 (EXT4)
Partition Identifier: 5
Partition Flags: 0 (R)
Unknown 1: 0
Partition Block Size: 57344
Partition Block Count: 16384
Unknown 2: 0
Unknown 3: 0
Partition Name: PARAM
Filename: param.lfs

--- Entry #6 ---
Unused: No
Partition Type: 2 (EXT4)
Partition Identifier: 6
Partition Flags: 0 (R)
Unknown 1: 0
Partition Block Size: 73728
Partition Block Count: 16384
Unknown 2: 0
Unknown 3: 0
Partition Name: KERNEL
Filename: zImage

--- Entry #7 ---
Unused: No
Partition Type: 2 (EXT4)
Partition Identifier: 7
Partition Flags: 0 (R)
Unknown 1: 0
Partition Block Size: 90112
Partition Block Count: 16384
Unknown 2: 0
Unknown 3: 0
Partition Name: RECOVERY
Filename:

--- Entry #8 ---
Unused: No
Partition Type: 2 (EXT4)
Partition Identifier: 8
Partition Flags: 1 (R)
Unknown 1: 0
Partition Block Size: 106496
Partition Block Count: 204800
Unknown 2: 0
Unknown 3: 0
Partition Name: CACHE
Filename: cache.img

--- Entry #9 ---
Unused: No
Partition Type: 2 (EXT4)
Partition Identifier: 9
Partition Flags: 0 (R)
Unknown 1: 0
Partition Block Size: 311296
Partition Block Count: 32768
Unknown 2: 0
Unknown 3: 0
Partition Name: MODEM
Filename: modem.bin

--- Entry #10 ---
Unused: No
Partition Type: 2 (EXT4)
Partition Identifier: 10
Partition Flags: 1 (R)
Unknown 1: 0
Partition Block Size: 344064
Partition Block Count: 1048576
Unknown 2: 0
Unknown 3: 0
Partition Name: FACTORYFS
Filename: factoryfs.img

--- Entry #11 ---
Unused: No
Partition Type: 2 (EXT4)
Partition Identifier: 11
Partition Flags: 1 (R)
Unknown 1: 0
Partition Block Size: 1392640
Partition Block Count: 4194304
Unknown 2: 0
Unknown 3: 0
Partition Name: DATAFS
Filename: data.img

--- Entry #12 ---
Unused: No
Partition Type: 2 (EXT4)
Partition Identifier: 12
Partition Flags: 2 (R/W)
Unknown 1: 0
Partition Block Size: 5586944
Partition Block Count: 24133632
Unknown 2: 0
Unknown 3: 0
Partition Name: UMS
Filename:

--- Entry #13 ---
Unused: No
Partition Type: 2 (EXT4)
Partition Identifier: 13
Partition Flags: 1 (R)
Unknown 1: 0
Partition Block Size: 29720576
Partition Block Count: 1048576
Unknown 2: 0
Unknown 3: 0
Partition Name: HIDDEN
Filename: hidden.img

--- Entry #14 ---
Unused: Yes
Partition Type: 1 (Unknown)
Partition Identifier: 9
Partition Flags: 0 (R)
Unknown 1: 0
Partition Block Size: 0
Partition Block Count: 0
Unknown 2: 0
Unknown 3: 0
Partition Name:
Filename:

Ending session...

Where is the issue?

PS: obviously, since I tried to flash only a kernel, I did not select "repartition".