Let’s start from the beginning

16Jun09

The ultimate goal: have Linux running on Nokia N70 (S60 series)
It is theoretically doable: look at the hardware specs.

The most tempting options however are NOT-doable:

• Loading uBoot from Symbian, using files from Siemens SX1 linux project http://linux-on-sx1.wiki.sourceforge.net.
  Failed (see here how):
  • ubootloader-1.5 quit with leave code=-2. ubootloader is, unfortunately, a closed source, no documentations

  probably because:

  • This U-Boot is patched for the Siemens SX1
• Flashing the U-Boot with JTAG directly into N70′s flash memory
  Would probably fail, because:
  • I could find no Nokia S60 series JTAG pin documentation
  • N70 is a BB5 phone, and it is protected from JTAGging, unlocking etc.

Possibly doable approaches could be:

• Spying the USB communication when Nokia’s Firmware Updater is in action
• Patching the U-Boot for N70 (referencing S60?, OMAP 1710?)
• Decrypting the flash of BB5 in a way it was done with DCT4
  • will try the bb5.zip, hoping it will also decrypt, not only unlock this BB5 phone
• Patching the flash memory according to this thread
• Disassembling ubootloader

Suggestions from you — the community out there — are more than appreciated!

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