It looks like there's a serious problem with the 9.13.2 update just posted. I upgraded my ZD1200 to this firmware and unfortunately after the upgrade, both of my R710's failed to upgrade to the new firmware:
2 23:26:46 R710 local2.err syslog: Firmware update error(-29)
Jan 2 23:26:48 R710 kern.warn kernel: [ 147.710684] : vid[1:0]=1,0
Jan 2 23:26:48 R710 kern.warn kernel: [ 147.710684] : vid[1:0]=1,0
Jan 2 23:26:51 R710 daemon.notice Firmware Daemon[2890]: working|looking up control server IP
Jan 2 23:26:51 R710 daemon.notice Firmware Daemon[2890]: working|reading control file
Jan 2 23:26:51 R710 daemon.notice Firmware Daemon[2890]: working|reading firmware file header
Jan 2 23:26:51 R710 kern.warn kernel: [ 150.222774] : vid[1:0]=1,0
Jan 2 23:26:51 R710 kern.warn kernel: [ 150.222774] : vid[1:0]=1,0
Jan 2 23:27:01 R710 daemon.notice Firmware Daemon[2890]: failed|AP Image Signing : Firmware public key verification failed.
Jan 2 23:27:01 R710 local2.err syslog: Firmware update error(-29)
Jan 2 23:27:06 R710 daemon.notice Firmware Daemon[3029]: working|looking up control server IP
Jan 2 23:27:06 R710 daemon.notice Firmware Daemon[3029]: working|reading control file
Jan 2 23:27:06 R710 daemon.notice Firmware Daemon[3029]: working|reading firmware file header
Jan 2 23:27:16 R710 daemon.notice Firmware Daemon[3029]: failed|AP Image Signing : Firmware public key verification failed.
Jan 2 23:27:16 R710 local2.err syslog: Firmware update error(-29)
Jan 2 23:27:21 R710 daemon.notice Firmware Daemon[3192]: working|looking up control server IP
Jan 2 23:27:21 R710 daemon.notice Firmware Daemon[3192]: working|reading control file
Jan 2 23:27:21 R710 daemon.notice Firmware Daemon[3192]: working|reading firmware file header
Jan 2 23:27:30 R710 authpriv.info dropbear[2116]: Exit before auth: Exited normally
Jan 2 23:27:31 R710 daemon.notice Firmware Daemon[3192]: failed|AP Image Signing : Firmware public key verification failed.
Jan 2 23:27:31 R710 local2.err syslog: Firmware update error(-29)
Jan 2 23:27:33 R710 kern.warn kernel: [ 192.711871] : vid[1:0]=1,0
Jan 2 23:27:33 R710 kern.warn kernel: [ 192.711871] : vid[1:0]=1,0
Jan 2 23:27:33 R710 authpriv.info dropbear[3306]: Child connection from 10.0.200.240:50893
Jan 2 23:27:34 R710 authpriv.notice dropbear[3306]: Deferring to RKS shell to authenticate password.
Jan 2 23:27:34 R710 authpriv.err dropbear[3306]: chown(/dev/ttyp0, 0, 5) failed: Read-only file system
Jan 2 23:27:34 R710 authpriv.err dropbear[3306]: chmod(/dev/ttyp0, 0620) failed: Read-only file system
Jan 2 23:27:36 R710 daemon.notice Firmware Daemon[3324]: working|looking up control server IP
Jan 2 23:27:36 R710 daemon.notice Firmware Daemon[3324]: working|reading control file
Jan 2 23:27:36 R710 daemon.notice Firmware Daemon[3324]: working|reading firmware file header
Jan 2 23:27:36 R710 kern.warn kernel: [ 195.648359] : vid[1:0]=1,0
Jan 2 23:27:36 R710 kern.warn kernel: [ 195.648391] : vid[1:0]=1,0
Jan 2 23:27:46 R710 daemon.notice Firmware Daemon[3324]: failed|AP Image Signing : Firmware public key verification failed.
Jan 2 23:27:46 R710 local2.err syslog: Firmware update error(-29)
Jan 2 23:27:51 R710 daemon.notice Firmware Daemon[3465]: working|looking up control server IP
Jan 2 23:27:51 R710 daemon