Hello Andy,I only took care of this problem because I have a 3750X that has HW Rev. V02 and it did not update the bootloader by itself. (max. Relase 15.0.2.SE)all higher did not want to start, this is also a topic that has already been described here...

Thanks @naveeni have export two Bootloader from my Switches....Thanks & Regards 

Hallo, on my vWLC with 8.3.102 the same issue, on 8.3.111 fix this.