diff --git a/uEnv_r3.txt b/uEnv_r3.txt
index 215ada5429c..2009079f6b6 100644
--- a/uEnv_r3.txt
+++ b/uEnv_r3.txt
@@ -32,15 +32,14 @@ ipaddr=192.168.0.19
 netmask=255.255.255.0
 serverip=192.168.0.10
 
-lskernel=ls ${device} ${partition};
 lstftp=if tftp ${loadaddr} ${serverip}:r3-itbfiles.lst;then setexpr listend ${loadaddr} + ${filesize};mw.b ${listend} 00 2;strings ${loadaddr};else echo "tftp download failed";fi
 askkernel=askenv kernelinput "enter kernel-name:";
-asksetkernel=run askkernel;if printenv kernelinput; then setenv fit $kernelinput;fi
 askbootnetfit=run lstftp askkernel;if printenv kernelinput; then setenv bootfile "${kernelinput}"; run bootnetfit;fi
 
-bootnvme=run usenvme; if test "$device" = "nvme"; then run newboot; fi;
-askbootnvme=run usenvme; if test "$device" = "nvme"; then run asksetkernel;run newboot;fi
+bootnvme=run usenvme; if test "$device" = "nvme"; then run loadenv; run newboot;fi
+askbootnvme=run usenvme; if test "$device" = "nvme"; then run askkernel;if printenv kernelinput; then setenv fit $kernelinput;run newboot;fi;fi
 
+bootnetfit=run buildargs;run setbootconf;if tftp $kaddr ${bootfile}; then bootm ${kaddr}${bootconf};;fi
 bootfile=bpi-r3.itb
 
 checkenv=test -e ${device} ${partition} ${bootenv}
@@ -80,11 +79,16 @@ wrfitnor=if printenv fitfile;then if fatload $device $partition ${loadaddr} ${fi
 
 bootdelay=0
 bootcmd=setenv bootdelay 3; run loadenv;bootmenu;
-boot0=run lskernel;run asksetkernel; run newboot;
+
+##untested
+lskernel=ls ${device} ${partition};
+askkernel=askenv kernelinput "enter kernel name:";
+
+boot0=run lskernel;run askkernel;if printenv kernelinput ;then setenv fit ${kernelinput}; run newboot; fi;
 
 bootmenu_0=1. Enter kernel-name to boot from SD/EMMC.=run boot0
 bootmenu_1=2. Boot kernel from TFTP.=run askbootnetfit
 bootmenu_2=3. Boot from SD/EMMC.=run newboot
-bootmenu_3=4. Boot kernel from NVME.=run askbootnvme
+bootmenu_3=4. Boot kernel from NVME.=run bootnvme
 
 bootmenu_default=2
diff --git a/uEnv_r4.txt b/uEnv_r4.txt
index 6ede26456d7..dc60a382cd2 100644
--- a/uEnv_r4.txt
+++ b/uEnv_r4.txt
@@ -9,6 +9,7 @@ fit=bpi-r4.itb
 #initrd=rootfs.cpio.zst
 
 loadaddr=0x46000000
+uaddr=0x41e00000
 kaddr=0x46000000
 rdaddr=0x48000000
 
@@ -30,15 +31,13 @@ ipaddr=192.168.0.19
 netmask=255.255.255.0
 serverip=192.168.0.10
 
-lskernel=ls ${device} ${partition};
 lstftp=if tftp ${loadaddr} ${serverip}:r4-itbfiles.lst;then setexpr listend ${loadaddr} + ${filesize};mw.b ${listend} 00 2;strings ${loadaddr};else echo "tftp download failed";fi
 askkernel=askenv kernelinput "enter kernel-name:";
-asksetkernel=run askkernel;if printenv kernelinput; then setenv fit $kernelinput;fi
 askbootnetfit=run lstftp askkernel;if printenv kernelinput; then setenv bootfile "${kernelinput}"; run bootnetfit;fi
 
-bootnvme=run usenvme; if test "$device" = "nvme"; then run newboot; fi;
-askbootnvme=run usenvme; if test "$device" = "nvme"; then run asksetkernel;run newboot;fi
+askbootnvme=run usenvme; if test "$device" = "nvme"; then run askkernel;if printenv kernelinput; then setenv fit $kernelinput;run newboot;fi;fi
 
+bootnetfit=run buildargs;if tftp $kaddr ${bootfile}; then bootm $kaddr;fi
 bootfile=bpi-r4.itb
 
 checkenv=test -e ${device} ${partition} ${bootenv}
@@ -69,7 +68,10 @@ wremmc=if printenv bl2file;then mmc partconf 0 1 1 1;if fatload $device $partiti
 bootdelay=0
 bootcmd=setenv bootdelay 3; run loadenv;bootmenu;
 
-boot0=run lskernel;run asksetkernel; run newboot;
+lskernel=ls ${device} ${partition};
+askkernel=askenv kernelinput "enter kernel name:";
+
+boot0=run lskernel;run askkernel;if printenv kernelinput ;then setenv fit ${kernelinput}; run newboot; fi;
 
 bootmenu_0=1. Enter kernel-name to boot from SD/EMMC.=run boot0
 bootmenu_1=2. Boot kernel from TFTP.=run askbootnetfit