Beaglebone Black does not flash from Micro SD, only 2 LEDs remain lit (D0,D1)

I’m a newbie in this kind of stuff, recently i got the bbb, so i’m trying to flash the debian image into the bbb (Debian 9.2 2017-10-10 4GB SD IoT ) (I had already installed this image a month ago successfully, but i formatted the sdcard, also i lost that one , I am working on a new micro sdcard) following the next steps:
"

  1. You should perform this process with only a single 5V 2A power supply plugged into the DC jack. Alternatively, you can use a USB adapter for power. Disconnect the Ethernet cable and remove any shields and USB peripherals.
  2. Power off your BBB by physically disconnecting the USB/power cable.
  3. Plug the micro-SD card into the BBB’s micro-SD card slot.
  4. Hold the Boot Button (S2) on the top right (near the SD card slot) and, while holding this button, insert the USB/power lead to connect the power. Keep holding the button until the LEDs start to flash. The blue on-board LEDs should light in sequence and then continue to flash for the next 5–25 minutes (depending on the distribution used and the speed of the SD card). The latest distribution flashes in a Cylon/Knightrider pattern.
  5. Wait until the LEDs stop blinking and all 4 LEDs are fully lit as in Figure 2 (the latest image then powers the board down). This process can take 5-25 minutes depending on the image used. If the flashing procedure fails—for example, no LEDs flash, or it keeps running for more than 45 minutes —then disconnect the power and try restarting the BBB with the S2 button pressed.
    "
    But while i’m holding S2, the LEDs lit in this secuense “S0,S1,S2”, after that only S0 and S1 stay lit ( i did this 7 times, and one time i waited like 10 hours to boot)
    The sdcard is a kingston 8gb class 10 (like the first one that worked)

That's because the image you installed to the microSD isn't setup by
default to flash the eMMC, you need to make one change to it..

https://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Flashing_eMMC

Regards,

and you have a GOOD power supply ?

Yeah, a charger 5V, 2A

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