Hi Emil
reason may be that mfg tool firmware should be rebuilt for new board
with updated ddr settings (in bootlets ../boot_prep/init-mx28.c). Steps are
described in attached Linux Guide sect.2.5 Building the Manufacturing Firmware
https://community.freescale.com/message/321913#321913
https://community.freescale.com/docs/DOC-1455
Best regards
igor
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