Glitching through DEC4 instead of DEC1?

[DownrightNifty]

Firstly, thanks a ton for putting this together! I'm new to voltage glitching and I'm trying to glitch an nRF52832-CIAA but it's in a weird package (MBN52832) made by a company called Murata which doesn't expose the DEC1 pin. Do you think glitching would be possible through the main power supply (DEC4) instead of through DEC1 (CPU power) if I removed the capacitors?

[epoide]

If DEC1 is not really exposed through a capacitor what you can do is desolder the nRF chip and provide voltage to it and you can access directly to the VDD_CORE . Since this is only to enable jtag and extract the flash , this approach could work.

[DownrightNifty]

Looking at the datasheet for the MBN52832 (see page 10 for pinouts): https://www.murata.com/products/productdata/8813650903070/mbn52832.pdf

It appears that the only available power-related pins are VDD and and DEC4.

[epoide]

I meant desolder the nrf BGA from the murata module.

[DownrightNifty]

Ah, I didn't know that was possible! Not sure how to go about doing that.

[c0d3z3r0]

Check out #10 ;)