I'm currently running Teddy Bears Tomato Firmware v1.28.9050 MIPSR2-beta20 K26 USB Ext and Ive always used the "Upgrade" function for his newer builds. This build has been extremely stable for me.
Now I'd like to try a Shibby or Toastman Build. My question is, is it OK to use the "Upgrade" option to Flash Over The Top of Teddy bears build or do I need to do the recovery flash, to install the Shibby or Toastman versions.
Also its been so long, do i need to "After flashing, erase all data in NVRAM memory"