Write protected NOR Flash ?

After updating U-Boot it is no longer possible to update the display table. The Nor-Flash seems to be written protected and it is not possible to change this.

The U-Boot comes with features for supporting the new display table. That's why some additional entries in the nvram have been necessary. While updateing the entries in the nvram flash are not changed. This has to be done manually. Please call “nvram reset” and afterwards “saveenv” so that U-Boot can updating the entries of the nvram. The changes are valid after rebooting the board.