Ok, what is Fremantle compatible then? Looking at the specs, this will be around droid 2 (CPU 1 GHz OMAP 3620, Droid 2 Global runs an OMAP3640 clocked at 1.2 GHz, Memory 8 GB flash ROM, 512 MB RAM), droid 1 was 3430 and sgx530 with 256 ram, a lot like n900. Since droids 2 can be bought for around 130$ (refurbished around 50$), maybe would make sense to find most compatible old device and build on that (form factor will probably make this impossible, but 100$ vs 700 euro...), with omap3 the only bump is ram/rootfs