LMT login failed

hello, please check the password, you can try to login on view mode.
What is your version? The password of V2R3 is Change_Me

i try to upgrade the version of u1911 from V2R3C20 to V2R3C50
during the upgrade the procedure got stuck on 19 out of 31 upgrade points.
the system restart it self and i am facing that problem . it initialize all the process shows command tree but at the end thata msg appears failed to save the command line .
webpage is okai and putty is also working fine

if i use view mode only it works
then LMT works
for config mode it shows that error