Missing Preloader on MTK6762, recognized as “MT6227 Phone”


A long time ago I hard bricked my daily dialer and in a fit of desperation I formated the preloader (silly me, should’ve looked for a boot-lock bypass instead!) and so, I can’t flash anything on my phone anymore as it throws a STATUS_BROM_CMD_FAIL error (using the all in one DA or the one provided by Hovatek yields identical results)

The Vol +/- buttons don’t let me flash, removing the battery doesn’t help, tespins neither and ‘lsusb -v’ only recognizes my phone as an MT6227 Phone with a V/PID of 0e8d:003.

here’s the output of ‘lsusb -v’

Code:

Bus 001 Device 079: ID 0e8d:0003 MediaTek Inc. MT6227 phone
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass            2 Communications
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0        64
  idVendor           0x0e8d MediaTek Inc.
  idProduct          0x0003 MT6227 phone
  bcdDevice            1.00
  iManufacturer           0
  iProduct                0
  iSerial                 0
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x0043
    bNumInterfaces          2
    bConfigurationValue     1
    iConfiguration          0
    bmAttributes         0x80
      (Bus Powered)
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         2 Communications
      bInterfaceSubClass      2 Abstract (modem)
      bInterfaceProtocol      1 AT-commands (v.25ter)
      iInterface              1 comm_if̦data_if̄Љ召
      CDC Header:
        bcdCDC               1.10
      CDC ACM:
        bmCapabilities       0x0f
          connection notifications
          sends break
          line coding and serial state
          get/set/clear comm features
      CDC Union:
        bMasterInterface        0
        bSlaveInterface         1
      CDC Call Management:
        bmCapabilities       0x03
          call management
          use DataInterface
        bDataInterface          1
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x84  EP 4 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0040  1x 64 bytes
        bInterval               1
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        1
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass        10 CDC Data
      bInterfaceSubClass      0
      bInterfaceProtocol      0
      iInterface              2 data_if̄Љ召呪풅ཊꤛ漢䕄礤
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
can't get debug descriptor: Resource temporarily unavailable
Device Status:     0x0000
  (Bus Powered)

I’ve searched far and wide for documentation on flashing both an MTK6762/5 chip and an MT6227 chip (best I found was a technicall brief).
I tried to get my hands on the DA for the MT6227 but I only ever found ones for a MT626X.

I’ve tried searching for general flashing tools, found like two and neither work with cdc connections or something.

so my request would be; does anyone of you know of any flash chip documentation repos or guides on low level flashing over a serial usb connection?

I am desperate.

 

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