Can you please clarify? By error 1, do you mean you are unable to do the ubiattach on your device?

What is the kernel you are normally running, are you in full open mode?
What does your dmesg say about ubi devices?

If you are not running an aegis-neutered kernel, you could try flashing the openmode+l2fix kernel available at the ubiboot page.

• sudo flasher -a firmware.bin -k zImage_2.6.32.54openmode_l2fix --flash-only=kernel -f -R
• wait for the device to boot
• enter root as devel-su
• /usr/sbin/ubiattach /dev/ubi_ctrl -m 4
• mount -t ubifs ubi0:var /mnt