love.unicycle

@t4oqui well said In my example, @GMOne gave me the hope to increase S1 speed, @MRN76 made my dream come true. Both are hero.

I can confirm this APP just works. My S1 speed limit had been increased from 20K to 26KM. I attached my screenshot. I had ordered J-Link and was going to open S1 and change the speed by using @GMOne 's Speed2Increase application. I had open S1 before. It took me whole night, really don't want to do it again. @MRN76 , you and your APP just saved me hours of work and risk to break the unicycle.

How much to change from S1 to S2 or Turbo?

@MRN76 updating through Bluetooth will be wonderful! I am counting on that. When will it be available?

A wonderful notes about how to find out the root cause of problem. Likely I need to get a new mother board for my S1.

I had looked to main board. There is not sign of problem. Don't know how to check motor. How do we know whether a motor is good or not?

My Ninebot S1 broke down last month. I was siting in park bench, and leaned S1 beside my leg. I didn't turn it off. It somehow tried to go under chair and lost power. The power button stops to response since then. Last night, I figured out battery fuse had blown. Here is the BMS I found from internet: http://content.invisioncic.com/r254450/monthly_2017_11/board1.jpg.90acf227b54bd71ecc8d739270ea3a08.jpg Those two on left-top corner of board, having Z letter on top, are fuse. I replaced them with 65V and 15AMP one. https://www.digikey.ca/product-detail/en/littelfuse-inc/2410SFV15.0FM-065-2/2410SFV15.0FM-065-2CT-ND/2766075 I could start S1, but blown again soon after. Do any of you know what kind of fuze it is?