Don't do it. I got 1.35NA on my A2 HW and I can't even get it accept anyother update, not even the 1.34NA version.
I managed to download another with A4 HW to 1.21 and all the problems I had accessing my security camera just went a away on using the exact same config file.
I *Sooooo* wished I had stayed at 1.21.
Thanks,
Ronst