The level calibration fails when the attenuator is blown.
You can perform a manual level calibration that avoids the negative impact of the broken attenuator
Connect two SMA
Enable CAL output at 30Mz
Set low input mode, center 30MHz
set CONFIG/EXPERT CONFIG/LEVEL CORRECTION/INPUT LEVEL/-25
The attenuator consists of multiple stages, 0.5, 1, 2, 4, 8 and 16dB
Yours seems to have blown the 2 and 8dB stages.
During a FW upgrade the transceiver can not output a high level signal.
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For more info on the tinySA go to https://tinysa.org/wiki/
