I bought my OP-1 used and it had the famous Firmware Bug: it was impossible to Boot Info TE-Boot mode. That meant that updates or resets were impossible. The OP1 worked fine like that for me, but the firmware lacked all of the new features since 2012 and that sucked.
I sent the OP1 to the German Servicecenter Siedler in Neuss, because somewhere on the OP1 Forum people recommended it.
After sending it in and waiting two whole months, they sent me a cost estimate of 400€. Not only do they have to flash the Firmware, they also have to install a completely new DSP Board…
Is this really necessary? On the Forum it said only a firmware flash was necessary… The OP1 worked completely fine with the old board… Should i do it or decline?