[FS#826] Better implementation of upgrade system on lede

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - piotr (pietia) 

Attached to Project - LEDE Project
Summary - Better implementation of upgrade system on lede
Task Type - Feature Request
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Medium
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - Hi,
It would be good to have an better implementation of upgrade system on lede , I'm talking about debian-like update system so for example after doing :
opkg update, opkg upgrade 
it would upgrade all packages including kernel to the latest stable release of lede and leave one old kernel (it's for getting back to old kernel if anything goes wrong)
After that reboot and we are in newest kernel. 

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=826