Process hangs, recovery.img file has been partially (!) created ; size is 16 Kb
Any idea ? For my information, how much time is needed to get the recovery.img (~64Mb) ?
Try to use other PC or other USB controller (for example, USB 2.0 instead of USB 3.0 or vice versa). Reading process should take 30-60 seconds (not more). If u are have problems with reading / make a backup of stock recovery - you can try to flash TWRP and skip this step. In any ways, even if flashing failed by some reasons, stock recovery will be recovered after you boot into a system. Also, you can use Mobile Upgrade Q in every time to restore your device to a factory state.
p.s. 2All: Seems we need some statistics to determine the problem with reading partitions. Small report like below seems to be enought:
1. Phone model (6055K / 6055P / ... )
2. OS (Windows XP, 7, 8, 8.1, 10) version ... x86 or x64
3. Name and model of motherboard and USB controller
p.p.s. I was tried my own app on three different PC's and two different phones (6055K and 6039Y). There is no any problem with reading partitions. But according to some user's replies here - problem with reading sometimes appears. Currently there is no idea why it can happens, because of phone, or because of PC hardware configuration. Need more reports (success or fail).