bricked it?

[User 15997]

two days in and it's already bricked! D:

after flashing a custom-built manjaro image to emmc, the pbp won't boot any more. not from emmc, but also not from sdcards (tried multiple) or usb sticks (tried multiple), neither with the default debian image nor with a stock manjaro image, regardless of whether emmc is enabled or disabled via the hardware switch (or even present). power led stays off, whether a uart cable is connected or not (or the uart is even enabled via switch).

looking at uart logs it seems that the chip doesn't even reach uboot. when booting with emmc disabled it comes out of DDR init just fine, but the boot stage isn't happy:

Code:

Boot1: 2019-03-14, version: 1.19
CPUId = 0x0
ChipType = 0x10, 249
SdmmcInit=2 0
BootCapSize=100000
UserCapSize=59640MB
FwPartOffset=2000 , 100000
mmc0:cmd5,20
mmc0:cmd7,10
mmc0:cmd5,20
mmc0:cmd7,10
mmc0:cmd5,20
mmc0:cmd7,10
SdmmcInit=0 1
StorageInit ok = 329828
SecureMode = 0
SecureInit read PBA: 0x4
SecureInit read PBA: 0x404
SecureInit read PBA: 0x804
SecureInit read PBA: 0xc04
SecureInit read PBA: 0x1004
SecureInit read PBA: 0x1404
SecureInit read PBA: 0x1804
SecureInit read PBA: 0x1c04
SecureInit ret = 0, SecureMode = 0
atags_set_bootdev: ret:(0)
GPT part:  0, name:        IDBLoader, start:0x40, size:0x3fc0
GPT part:  1, name:           U-Boot, start:0x4000, size:0x2000
GPT part:  2, name: TrustedFirmware-A, start:0x6000, size:0x2000
GPT part:  3, name:              EFI, start:0x8000, size:0x64000
GPT part:  4, name:             Boot, start:0x6c000, size:0xfa000
GPT part:  5, name:           RootFS, start:0x166000, size:0x7315fdf
no find partition:uboot.
LoadTrust Addr:0x4000
LoadTrust Addr:0x4400
LoadTrust Addr:0x4800
LoadTrust Addr:0x4c00
LoadTrust Addr:0x5000
LoadTrust Addr:0x5400
LoadTrust Addr:0x5800
LoadTrust Addr:0x5c00
Addr:0x4000 No find trust.img!
LoadTrustBL error:-3

emmc enabled stops even earlier:

Code:

Boot1: 2019-03-14, version: 1.19
CPUId = 0x0
ChipType = 0x10, 251
mmc: ERROR: SDHCI ERR:cmd:0x102,stat:0x18000
mmc: ERROR: Card did not respond to voltage select!
emmc reinit
mmc: ERROR: SDHCI ERR:cmd:0x102,stat:0x18000
mmc: ERROR: Card did not respond to voltage select!
emmc reinit
mmc: ERROR: SDHCI ERR:cmd:0x102,stat:0x18000
mmc: ERROR: Card did not respond to voltage select!
SdmmcInit=2 1
mmc0:cmd5,20
mmc0:cmd7,10
mmc0:cmd5,20
mmc0:cmd7,10
mmc0:cmd5,20
mmc0:cmd7,10
SdmmcInit=0 1
powerOn 68753

is this recoverable?