finally baby,you found out!!i know exacly what it was now ,split trimmed files useing xci cutter latest require your fat32 sd card to have 32kb clusters my card was 16kn clusters after a format to 32 kb clusters splitting trimmed xci files into both 4gb and 2gb files worked no need for exfat nore an update on fw 4.1 hope this helps for the future
