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How to downgrade from 9.50?

My 1030 has become extremely unstable of late. It crashes an average of once every half hour (even more frequently on some rides). I have seen a bunch of errors in the debug logs:

  • "stp_sdio_tx_rx - Error type ( 1 ) err( 6E5D8017 )"
  • Error type ( 8 ) err( 8 )"
  • "mtk_stp_btm - Error type ( 0 ) File( ..\\..\\..\\Platform\\Hesper\\hwm_edge_mt6630.c ) Line( 423 )",

I haven't been able to contact tech support by chat or phone so far. Will keep trying.

Meanwhile, I'm wondering if I could downgrade to an older version of firmware (9.10?). I see a bunch of instructions in these forums to back up settings and copy a file named GUPDATE.GCD, but how do I get that file for the older release?

Thank you!