As per title USB image flashing is not working after build 5.2.40. This image has a size of 98.6M but images after this (41,42,43) have a sizes of 176,176.1 and 176.2 respectively. Also the fastboot.bin file size changes from 770 in build 40 but is only 374 in subsequent builds. Not sure if this is an image compilation error or not as if I do a full image backup using build 43 it is not usable as USB flash image either.