HLY01922 I only have the R51-V1.7 version, but it should still work. You can try it out, or contact customer service on Taobao. https://wwnq.lanzoue.com/i405P29fl1rg
BD4UIN 15845555832 I recommend that you join the QQ group called "K5 Global Plant Exchange Base 2", which has a master named losehu.
zw_apple The display issue seems to be related more to calibration files than to the firmware update itself. Did the user update the firmware and also the font library?
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