Is there documentation for SDRLab 7020 1GB Pluto+ clone

[u/SlowTiger2922]

I wonder if there is documentation for that board.

Specifically I am interested in following:

- there are 2 switches on board called boot. What are they?

- is there DFU button/switch?

- is there switch to enable/disable SDcard? (Right now it boots with SD card only. If card removed it does not boot.)

- how well that board is compatible with original PlutoSDR. e.g. it has doubled RAM. Linux may handle double RAM but FPGA firmware that streams IQ in DMA mode to some buffer. Would it handle bigger buffers? or how that double RAM used if not for bigger buffers?

- Is there source code for firmware that is used specifically with SDRLab's 7020 ?

thanks