Just pop the SD card in to run BraiinsOS+, take it out to revert back to Bitmain Firmware. We can check the compatibility for you. BraiinsOS+ is compatible with most Antminer S19 series miners. Compatible with Antminer S19, S19 Pro, T19, S19j, S19j Pro, S19j Pro+, S19a Pro, S19 XP, L7 and D7 Models.
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