SX OS v2.4.1 Beta - black screen

[DonaldAT]

so today, 19th dec 2018, I just see an update on SX OS v2.4 Beta to SX OS v2.4.1 Beta, as a good fellowship of sx team, i download the file, put it in my sc card and put it back to switch, no auto rcm, so i need to put the jig in the right joycon, and hold start plus vol+, put the dongle and sx logo_red logo appear and black screen.
can someone help me on this issue, ASAP because I will be travelling tomorrow and need to fix this switch.

i try to connect to the base seem the switch no charger, I try to put in standalone charger no charger also.
before performing the update i have 79 battery left in the switch.


ps: i have NAND file.

appreciate all kind information or solution
thank you so much and best regards

DAT

OS v2.4.1 Beta

 

[DonaldAT]

so i hold the power button up to 30 second and the switch boot again to Nintendo logo,.

but I am little afraid to update to SX OS v2.4.1 Beta. if this is normal

thank all.

best regards

DAT