lg B220a imei repair error

Im tried repair imei in this phone model and get error and not change.
Whit repair eprom phone get dead.

Code:

Welcome to Octoplus/Octopus Box LG Software version 2.2.8
--------------------------------------------------------------------------------
Platform: LG MTK
Selected port: COM3
Selected baudrate: 921600
Selected model: B220A
Selected USB connection type
Please, disconnect battery and connect cable...OK
Phone found.
Setting power state...OK
Sending loader...OK
Synchronizing with loader...OK
Detecting NOR flash chip...OK
Reading info...OK
Checking security...
Checking security passed!
--------------------------------------------------------------------------------
IMEI A: 355520-06-366813-9
IMEI B: 355520-06-366814-7
NOR flash chip: Unknown
NOR size: 4 Mb
--------------------------------------------------------------------------------
Performed by 2.2.8 software version.
--------------------------------------------------------------------------------
Checking data...OK
Platform: LG MTK
Selected port: COM9
Selected baudrate: 921600
Selected model: B220A
Selected USB connection type
Please, disconnect battery and connect cable...OK
Phone found.
Setting power state...OK
Sending loader...OK
Synchronizing with loader...OK
Detecting NOR flash chip...OK
Reading info...OK
Checking security...
Checking security passed!
--------------------------------------------------------------------------------
IMEI A: 355520-06-366813-9
IMEI B: 355520-06-366814-7
NOR flash chip: Unknown
NOR size: 4 Mb
--------------------------------------------------------------------------------
Fixing IMEI A...
New IMEI A: 355520-06-366820-4Failed!
Performed by 2.2.8 software version.
Connecting to server support.octoplusbox.com:82...OK
Authorizing...OK
--------------------------------------------------------------------------------
Checking data...OK
Platform: LG MTK
Selected port: COM3
Selected baudrate: 921600
Selected model: B220A
Selected USB connection type
Please, disconnect battery and connect cable...OK
Phone found.
Setting power state...OK
Sending loader...OK
Synchronizing with loader...OK
Detecting NOR flash chip...OK
Reading info...OK
Checking security...
Checking security passed!
--------------------------------------------------------------------------------
IMEI A: 355520-06-366813-9
IMEI B: 355520-06-366814-7
NOR flash chip: Unknown
NOR size: 4 Mb
--------------------------------------------------------------------------------
Fixing IMEI A...
New IMEI A: 355520-06-366820-4Failed!
Performed by 2.2.8 software version.
--------------------------------------------------------------------------------
Checking data...OK
Platform: LG MTK
Selected port: COM3
Selected baudrate: 921600
Selected model: B220A
Selected USB connection type
Please, disconnect battery and connect cable...OK
Phone found.
Setting power state...OK
Sending loader...OK
Synchronizing with loader...OK
Detecting NOR flash chip...OK
Reading info...OK
Checking security...
Checking security passed!
--------------------------------------------------------------------------------
IMEI A: 355520-06-366813-9
IMEI B: 355520-06-366814-7
NOR flash chip: Unknown
NOR size: 4 Mb
--------------------------------------------------------------------------------
Fixing IMEI B...
New IMEI B: 355520-06-366814-7Failed!
Performed by 2.2.8 software version.
--------------------------------------------------------------------------------
Checking data...OK
Platform: LG MTK
Selected port: COM3
Selected baudrate: 921600
Selected model: B220A
Selected USB connection type
Please, disconnect battery and connect cable...OK
Phone found.
Setting power state...OK
Sending loader...OK
Synchronizing with loader...OK
Detecting NOR flash chip...OK
Reading info...OK
Checking security...
Checking security passed!
--------------------------------------------------------------------------------
IMEI A: 355520-06-366813-9
IMEI B: 355520-06-366814-7
NOR flash chip: Unknown
NOR size: 4 Mb
--------------------------------------------------------------------------------
Repairing EEPROM...Failed!
Performed by 2.2.8 software version.
--------------------------------------------------------------------------------