I use NanoBoot
1- select the update and upload it and press OK, but DO NOT PRESS UPDATE NOW RIGHT AFTER
2- Connect user root with putty to the NAS
4- Write sed 's/flashupdateDeb/flashupdateDeb1/' /autoupd@te.info > /autoupd@te.info1 and press enter
5- Write mv /autoupd@te.info1 /autoupd@te.info and press enter
6- In the GUI Synology panel press update now and wait to come back the Panel Synology
Note: After restart I have 0 HDD´s... I turn OFF the NAS and turn ON. Now its working good and I have all HDD´s
I dont try direct (Update Now) from Panel..