on ZD3000 (9.6.2.0 build 13), upgrading firmware of ZF7762 AP is not working.
check below logs
2014/04/20 11:18:58 Low Failure to upgrade AP[2c:5d:93:1c:96:80] image from [9.5.0.0.156] to [9.6.2.0.13] after [16] retries
2014/04/20 11:09:54 Medium AP[2c:5d:93:1c:96:80] joins with different firmware/custom file version and is being upgraded.
2014/04/20 11:08:34 Low Failure to upgrade AP[2c:5d:93:1c:96:80] image from [9.5.0.0.156] to [9.6.2.0.13] after [16] retries
2014/04/20 10:59:30 Medium AP[2c:5d:93:1c:96:80] joins with different firmware/custom file version and is being upgraded.
2014/04/20 10:58:10 Low Failure to upgrade AP[2c:5d:93:1c:96:80] image from [9.5.0.0.156] to [9.6.2.0.13] after [16] retries