Wdr3500 snapshots fail

Hi, how are you? I have a WDR3500 v1. I tried to update it to the new version of snapshots through cli. This is not the first time I do it. The router was already in ath79. It seems to have done the normal process, maybe a little faster than normal. And when reboot does not start, It enter a constant reboot cycle and I cannot access in safe mode. By which I can not access by tftp. Any solution? I leave a capture of the firmware that broke the system. Thank you

I found a solution, the firewall blocked my port. The previous version of squashfs_sysupgrade worked, the current one does not boot