Just received two A10 500's and I'm having a world of problems with both of them.

One of the A10's (A10L, g19 controller, firmware: a10l_20200715_061347) has zero accepted shares and continues to generate 100% rejects.  I have tried different ports on the control board, different data cables, different PSUs, etc.  Even when resetting the miner and having it auto-tune with the default pool settings, I can't get any accepted shares.  It was working before I installed the firmware (originally upgraded firmware because I had problems connecting but later realized it was a network/router issue).

The other A10 (A10, g19 controller, firmware: a10_20200628_082241) continues to auto-tune over and over about every 60-90 minutes once it hits around 400MH/s...I can't get it to complete autotuning and just hash like normal.  Any suggestions?

Also, does anyone have firmware from June-December 2019 available?

Type: A10L
Controller Version: g19