Yo te recomendaria que pusieras el parche mover_copiar_archivos_w810_r4ea031
Con este parche puedes mover cualquier archivo a qualquier carpeta incluyendo carpetas de la FS..... De esta manera pasas los menus a tu celular como cualquier imagen, y despues los mueves a la ruta /tpa/preset/system/desktop/flash desde el celular.

A mi Nunca me a fallado......le subo menus flash seguido.... Funcionando 100%.....

Aqui esta el parche pero es para Firmware R4EA031.....

Parche VKP
;W810 SW-R4EA031
;Copiar/Mover archivos a cualquier carpeta
;Agregada una pestaña mas en el Admin. de Archivos "Arch. de Sistema: tpa, system, smsdata
;Habilitada la copia a tpa
;v. 3
;© IronMaster
+44140000
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1586210: FFFFFFFF 20465300



Si tu firm es igual.... Copias esto al block de notas y le pones extencion .vkp y lo aplicas y listo.....

Saludos y Suerte