I tried to upgrade the SB1 from BSP20 to BSP22. I had in 4 devices and in 2 of them, after the upgrade completed, the units stay in the boot loop and it's not possible to use them. I noticed that in this 2 devices, before to start the upgrade process, the SB1 showed a message to replace the battery or insert the SB1 in the cradle, but the SB1 was in the cradle yet after pressing the botton RETRY, that appears on the screen, after the 3rd or 4th pressing the upgrade process starts but when the SB1 reboot, the unit keep this reboot loop.
I stooped to upgrade the units until understand what it's happening and find any solution. Do you have any answer about this issue that I found?