diff --git a/src/fs/low_flash.c b/src/fs/low_flash.c
index c201d5c..051797e 100644
--- a/src/fs/low_flash.c
+++ b/src/fs/low_flash.c
@@ -258,20 +258,12 @@ page_flash_t *find_free_page(uintptr_t addr) {
 }
 
 int flash_program_block(uintptr_t addr, const uint8_t *data, size_t len) {
+    page_flash_t *p = NULL;
+
     if (!data || len == 0) {
         return PICOKEY_ERR_NULL_PARAM;
     }
-#if defined(ESP_PLATFORM)
-	uintptr_t addr_alg = addr & -FLASH_SECTOR_SIZE;
-	uint8_t *cache = (uint8_t *) malloc(FLASH_SECTOR_SIZE);
-	memcpy(cache,(uint8_t *) addr_alg + (uintptr_t) map, FLASH_SECTOR_SIZE);
-	flash_range_erase(addr_alg, FLASH_SECTOR_SIZE);
-	memcpy(cache + (addr & (FLASH_SECTOR_SIZE - 1)), data, len);
-	flash_range_program(addr_alg, cache, FLASH_SECTOR_SIZE);
-	free(cache);
-	return PICOKEY_OK;
-#else
-	page_flash_t *p = NULL;
+
     mutex_enter_blocking(&mtx_flash);
     if (ready_pages == TOTAL_FLASH_PAGES) {
         mutex_exit(&mtx_flash);
@@ -287,7 +279,6 @@ int flash_program_block(uintptr_t addr, const uint8_t *data, size_t len) {
     //printf("Flash: modified page %X with data %x at [%x]\n",(uintptr_t)addr,(uintptr_t)data,addr&(FLASH_SECTOR_SIZE-1));
     mutex_exit(&mtx_flash);
     return PICOKEY_OK;
-#endif
 }
 
 int flash_program_halfword(uintptr_t addr, uint16_t data) {
@@ -303,9 +294,6 @@ int flash_program_uintptr(uintptr_t addr, uintptr_t data) {
 }
 
 uint8_t *flash_read(uintptr_t addr) {
-#if defined(ESP_PLATFORM)
-	return (uint8_t *) addr + (uintptr_t) map;
-#else
     uintptr_t addr_alg = addr & -FLASH_SECTOR_SIZE;
     mutex_enter_blocking(&mtx_flash);
     if (ready_pages > 0) {
@@ -325,7 +313,6 @@ uint8_t *flash_read(uintptr_t addr) {
     }
 #endif
     return v;
-#endif
 }
 
 uintptr_t flash_read_uintptr(uintptr_t addr) {
@@ -349,10 +336,6 @@ uint8_t flash_read_uint8(uintptr_t addr) {
 }
 
 int flash_erase_page(uintptr_t addr, size_t page_size) {
-#if defined(ESP_PLATFORM)
-	uintptr_t addr_alg = addr & -FLASH_SECTOR_SIZE;
-	flash_range_erase(addr_alg, page_size);
-#else
     page_flash_t *p = NULL;
 
     mutex_enter_blocking(&mtx_flash);
@@ -372,7 +355,6 @@ int flash_erase_page(uintptr_t addr, size_t page_size) {
     mutex_exit(&mtx_flash);
 
     return PICOKEY_OK;
-#endif
 }
 
 bool flash_check_blank(const uint8_t *p_start, size_t size) {